So I have had the opportunity to use the Sun Joe SPX-3000 pressure washer several times now. This is the best electric pressure washer I have ever used, with the PSI and GPM rating. It is solidly-constructed with an induction motor and uses standard connections (M22 metric for hoses and gun and 0.25 quick-connects for nozzles). I have discovered that in going to Lowe's and Home Depot, you can get just about any connection of M22 and 3/8" quick connectors and adapters. I now have a couple of extension wands with quick connects, a MTM foam cannon, and best of all, an EZ Clean 15" hard surface cleaner from Home Depot. It makes cleaning the porch, driveway and sidewalks easy and quick. It used to take me most of a day to clean my 16x24 driveway, using the high pressure needle spray nozzle with my 1300 PSI Karcher. Now, using the surface cleaner with the higher PSI and GPM washer, I can do it in 90 minutes. The seven month rainy season of Seattle causes quite the mold and mildew buildup on the driveway and sidewalks.
Hopefully in the next couple of weeks, depending on the weather, I am going to use the foam cannon to wash down the vinyl siding of my two story house without having to get out the ladders. I have some ZEP siding wash that is supposed to take out the dirt and mildew. I will report back on how that goes.