I've been looking for a pressure washer for home use. Driveways, Siding, brickwork, car washing, etc. From my research, it looked like 3.K PSI was the ideal for concrete washing. Local Lowes has Simple Green PW solution. I gave them a call and was happy with the info they provided between their siding vs. concrete cleaner. For the machine, I've decided on the following + matching nozzle. Other than possibly a longer hose, is there anything out of the obvious I'm missing 4GPM 3.5K PSI Belt Driven Washer http://pressuretek.com/beltdirivencat.html Roto Nozzle http://pressuretek.com/idkse47psi.html Rotojet also seems to make 3-4 lines of turbojet nozzles not offered by Ptek. Any recommendations. General, Rotojet 3000 or 5000 Series, Rotomax, Suttner ?? Gauge http://pressuretek.com/qico0psistst.html Should be useful to see how low I am attentunating the pressure ?