The hammer was very powerful and exceeded my expectations, the case that it came with may be a little weak, mine was damaged and cracked in four different places when I opened it up.

So why would you need a breaker hammer if your not in road construction? To break up old concrete driveways and walkways, to break up old asphalt, floor trenching for pipes and you can also use it on really hard soil like clay. There are several well known brands in the price point but this unit pretty much crushes them.
Let's start off with the weight, at 50 pounds it's lighter than most units in it's class, the Makita is 70 pounds, and that means a lot. The Bosch 11335K is only 35 pounds but it only has 22 feet pounds of impact energy, this unit boasts 43. I decided against the Bosch because in order to turn the unit on or off you have to take your hands off the handle...I find that to be a huge safety issue. This unit's power switch can be reached without taking your hands off the handle. No compressor needed! This unit runs on 110 v so you can use it on household current unlike other hammers. 20 amps, 85 joules and 2100 watts of power beat out all the bigger names I was considering. The handle is padded to absorb shock which was appreciated. It only has a 10 ft cord but you use an extension with these units anyway so that was not a deal breaker. At 107 decibels...not bad but you gotta expect noise with these units, A 24 month warranty beat out all the others I looked at. It comes in a rolling case for transport which you need cause this beast is heavy. The only thing I didn't like was no soft start function and no 360 degree foregrip which really helps with control. After a few days there was a bit of skipping but nothing horrible.
I feel for the price, you get so much more than most of the big name brands with a longer warranty so I find it to be a good value.

First off - these tools are not compatible with SDS-Hex. As seen in the picture I uploaded, the compatible bits have a hex shank of about the same size as SDS-Hex, but the flat is at a location that's incompatible with SDS-Hex. I found some compatible bits from TR Industrial. For example, here is a compatible clay spade . I learned this the hard way after ordering some SDS-Hex bits that arrived shortly before the tool arrived. "Hopping mad" is an understatement.

I have the 20 Amp hammer and the 16 Amp one. I ordered the 16A one because it weighs about 2/3 of the bigger one and I'm simply not strong enough to wrangle the 20A with any sense of comfort or confidence. It is a heavy beast. Very effective, but heavy. The 16A one is manageable for this about 60 year old guy.

Regarding the 20A one - it leaks oil where it shouldn't. The 16A one doesn't. Yet another reason I prefer the 16A one - I can store it without worry.

The 2100W tool came in what might have started as a nice case, but was shattered at the hinges and a few other spots when it reached me. This is remedied with a few cheap tie down straps.

The 1700W tools came in a nice -intact- case. Nice!

As for function. Yes! Both are things of beauty. They break through hard soil, concrete, rocks, and asphalt like a dream. I've also use them to drive steel fence posts into hard soil. In the past, I've tried shovels (too hard), picks (great for the first 6"), and sledge hammers (it always comes to this). These tools just pushed those posts smoothly into that hard hard soil. HOWEVER - it was way easier with the 16A tool because it was so much easier to get the thing in position to drive those posts.

The 20A tool works better for tamping/compacting soil and jack hammering slabs. The 16A tool is better for general demolition and stuff that requires more movement, shifting, and working at non-vertical angles.

Great tool

Lives up to its name. I broke up part of my garage floor and patio for my recent re-do of both. It is super heavy and well built. A smalll issue is that once you attach the handles, it does not fit in the case anymore. I think that is weird. The tool should fit in its case with the handles attached.

I am now moving on to use this to help dig holes for tree planting and other tasks here in dry CA. IT's overkill for a homeowner like me, but I love it.