I'm a working musician who transports my gear at least 4 times a week (Bose L1 pro, large gig bag). I have had a rock n roller for the past 15 years and it's bullet proof and a great cart but it's heavy and often bigger than I really need for my solo show. This one is smartly engineered for a musician. It's small light and easily foldable but MUCH sturdier than your average foldable hand truck. The foot plate is actually large enough to hold a PA speaker or a larger amp, the wheels are sturdy and it has a foot bar that allows you to easily tilt your load. I've been looking for a hand cart like this for years. I've purchased a few Mag Carts and they seem to last a year at best before they bend, fail or go wonky. I'm guessing this one'll have some staying power. I only wish the flex straps were included since they're pretty essential.

Can get from the car to the gig in one trip. Items included in photo are:

Rock-N-Roller R12RT (shown in fully extended position)
Rock-N-Roller RSD10 Solid Deck System
Rock-N-Roller Handle Bag with Rigid Bottom (holding the keyboard)
Rock-N-Roller Medium Multi-pocket Tool/Accessory Bag (holding all cables, cords, mic, foot pedal, extension cord, batteries, and other small misc items)
Rock-N-Roller RBCB Flex-Straps (4-pack), which includes (1) 36" and (3) 48" straps

It was quite the investment, but everything is solidly built, and will get all that expensive equipment to and from the gig safely. No more making 6 trips back and forth from the car to the gig.

Nice cart with good sized wheels that almost (but not quite) feel like rubber wheels (which i'd rather have had, but i'm ok with their plastic ones). Easy to set up and well built. Some complaints:

1. Quality control is not very good - you're supposed to put on a plastic washer on the axle before you put the large rear wheels on, then drop a cotter pin through the hole at the end to lock the wheel on- but with the plastic washer on both sides, there's a quarter inch of space where the axle rod sticks through the wheel, so it's easy to reach in and drop the pin in the pre-drilled hole for it. On the other side though, only a millimeter or 2 of the hole is visible, with the rest being covered by the yellow wheel mount... so the pin won't fit. I had to remove the washer to get enough room where i could put the pin in. It's obvious the post was welded a quarter of an inch too far to one end.
2. Would have liked pre drilled holes i the bottom of the frame, so you could extend and lock the length you want easier. The way it looks like, you can only do that when fully extended, otherwise you have to use the wing nut to tighten it to the frame, instead of the pre drilled holes in the fully closed or fully extended position.

Also, this thing cheaps EASILY. Paint came off hen using a bungie cord with *plastic* hooks that wasn't even on tightly. When putting down the handles, they just barely touched each other and the paint came off. Very very poorly painted. If you buy this cart, also buy a bottle of touch of paint, because you'll need it.

I did like the grip tape on the frame- it's not too rough where it will damage anything, but gives just enough grip so nothing slides off. The rounded "stair climber" feature is useless, unless you want to grind the black paint right off of your cart.

I also with one side of the rail could extend higher, as if you're a taller person, you'll have to bend over to be able to reach the handle. But a good cart on the whole that hopefully will be improved down the road. If you are taller than 5'6", you won't be able to push the cart unless you lean over to get to the handle- pulling the cart from the front is the only way you can manage, and both not pleasant to do.

From the reviews i've read on here, there is no such thing as customer support, and they will not contact you back. The only reason i bought this cart is because there wasn't another cart similar to what i needed by another company.

Update (4/17/2017)
I've only used this cart 3 times, each very gently, and i still end up with chipped paint off this thing, every single time. If you order this cart, you'll also want to order a bottle of black touch up paint, because you'll need it - A LOT.

The cotter pins used to fasten the lower part of the handle assembly to the base of the cart wan't bent back enough, creating very sharp edges that caught on my camera bags. Luckily i spotted it sticking into the bag and pulled it away before it had a chance to damage and tear the bag. The company really should use another type of cotter pin that doesn't create this situation, or have more quality control over their product.

Notices that pulling the frame rails apart to make room for gear, shreds the frame paint off in an instant, exposing patches of bare metal. Another bad design flaw.

The sticker advertising the company started peeling off the cart frame within a week of purchase just sitting in my room. I pulled both off to spare anyone from knowing where this cart came from. (Sorry RocknRoller, your cart rolls, but it definitely does NOT rock).

This is a really nice tool for hauling a wide variety of equipment. For my purposes, it's going to be hauling a lot of drums around... I decided to use it several times before putting my two cents up here, so here goes. The design is quite good, and it's easy to use. It takes a few times to get the ideal technique when raising an lowering the end supports, but it's not difficult. I wouldn't mind if it were a little lighter, but considering the weight of gear it's rated to handle, I can't really complain.
For my unit, there were a couple odd things going on with it when it first came out of the box... most of the stickers were peeling off including the friction strips on the top of the bed (maybe this one had been sitting in the Amazon warehouse for a while or something), one of the pivoting wheels had a slightly damaged end that prohibited it from inserting into the frame and one of the cotter pins that was supposed to ship with it wasn't a cotter pin at all, but an aluminum nail. All pretty strange, but fortunately customer service was very responsive and easy to deal with and shipped out a new wheel, a cotter pin and replacement friction strips quite quickly.
There are a couple of things I did with the unit that aren't part of the instructions provided that I think are worth noting. I'm a little 'detail oriented' as I prefer to say, so I'm always looking for ways to make things better when I perceive a shortcoming... First off, I applied a very light coat of synthetic grease on the shaft that the non-pivoting wheels ride on. I used a Teflon based bicycle grease... I wouldn't suggest using a petroleum based grease or it may react with the plastic.
I decided to reuse the protective caps that ship on the horizontal shaft to create a "permanent" cap for the non-pivoting wheels. Normally, the shaft would just be an open hollow tube and a potential place for moisture, debris and I suspect, eventually corrosion. In order to do this, I had to first carefully shave off about 1/2 an inch of the cap depth with a utility knife. If you don't shave off enough, the cap won't fit on and if you shave off too much, there's no structure around the holes for the cotter pin. Needless to say, try to create a smooth, flat edge. Then I drilled 1/8th inch holes on opposite sides of the cap for the cotter pin to go through. This was a bit tricky to line up the holes and make sure they're not too far in or out on the side of the cap (not to mention opposite each other), so take your time on this. I used a dowel rod for inside support and a drill to make my holes, but you could probably also heat up one of the cotter pins or a nail and melt a hole. Ultimately, this worked our really nice because the cap protects the open shaft and the cotter pin holds the cap in place.
The other modification I did was to go to the local hardware store and get some more abrasive friction tread to put on the top of the bed rail. The stuff provided works ok, but my plastic drum cases still slid around quite a bit if I turn quickly. By getting the sandpaper like black stair tread and cutting it to fit the top rail , it's got much better grip for my needs and I don't worry about things sliding off as much. There's no way to put anything on the portion of the narrower rails that slide into the larger rails, so just take that into account when you're loading your stuff. If your transporting something with a nice finish you don't want to scrape up, this may not be something you want to do, but for me, it was a no brainer.
Overall, the Rock-N-Roller is a great addition to my arsenal... Props to the company and their staff for the kind of customer service that one hopes for but is often sadly lacking in most customer interactions these days.

This is SO easy to use. It's been great for craft show loading in/out and just moving anything. It's light and easy to move by myself and folds up nicely without taking up a bunch of space. Worth every penny!