I need a good p/w to keep my equipt. clean. Lazer, w/b, etc. I don`t buy junk!! I rented a HotShot from our local Equipt.Rental store to do my decks at home and it worked great! Probably comm. grade. I assume the most important part is the pump. Are all pumps created equal? What pump brand should I be looking for? No plans on going into the "Biz" w/it! Karscher, yes/no? Thanks.