Today I tried the Berserker 1700W 30-Pound SDS-Hex Demolition Jack Hammer,1-1/8" 14-Amp for the first time. My driveway needs some repairing. I did a smaller area, breaking it up with a sledge hammer, but when I tried to break up a different part of the driveway, the concrete was brittle in the top 2 inches, but then there was another 4" where the sledge hammer just went thud when I hit it, and it wouldn't break up.
I always do my research before purchasing things, and this jack hammer was highly rated. And for good reason! I was concerned that it might not have enough power, but it did. In about a fifth of the time that it would have taken me with sledge hammer and pick ax, the job was done. I told my wife that this has to be one of the greatest tools there is (especially when hand tools fail). I am very happy with it.

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.

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.

Although this didn't work for I needed it did make make nice work of the concrete I was busting up. I was trying to pull fence posts and didnt realize who ever poured the cement thought they supporting a skyscraper. Very powerful and well built imo. Next spring I plan on replacing a walkway and I'm glad I already have this. I don't see it being an issue busting up a walk way with jack hammer.