I use to have AR Blue electrical washer but it was garbage after a few months, the engine will rev without pressing on the trigger, needed to buy an aftermarket adapter to connect the foam cannon in and it still leaked.
If I remember correctly I had a Honda pressure washer by Simpson Megashot 2800, worked like a charm. As for the foam cannon I use the MTM Hydro foam cannon have it for 4 years and still there.