Received the ePX3100v as a birthday gift. Used it this weekend to wash 3 cars, and tested the turbo nozzle on the sidewalk. I was impressed with the pressure generated by this small unit.
Pros: Small enough that it doesn't take up a lot of storage space. Strong enough power for simple jobs like fences, walkways, car wash. Cons: Make sure the nozzle is on securely, otherwise it will get launched. Power is not sustained for long periods of time. Running a power cord, a water hose, and the washer hose make portability difficult when in use.