I just use pressure washer for cleaning concrete around the house, and my wheels and tires when I take them off to do inside and outside and wheel wax. I bought this:
Not really because it is cheap, because it is small, light, and decent PSI. I wanted something I can just put on a garage shelf. Not another giant garage tool. There are plastic parts, which I am sure can break, but I have had it a year know and haven't had any issues, but I would say I only use it about once every two months. For that kind of usage, and price, its a steal, IMHO.