I am looking for a pressure washer to clean bricks on my walkway and also want it to be powerful enough for tougher jobs One that has pressure adjustments and resuavors for mixing cleaning solutions,and is on wheels, plus very reliable. Does anyone have GOOD advise on any perticular type what features should I be looking for. Priced at around $ 300.00 or so To the Vets Happy Memorial Day and Thanx