There are hundreds of different electric models out there but I would stay clear of 90% of them. If you go with a cheap model under $300 get the extended warranty. Northern tool has a few nice electric models with a cat pump in your price range. The pump is what you wanna focus on. Cat, general, ar, comet are all good pumps. As far as the difference in models on Honda gas engines the GX models have iron sleeves and several other benefits over the GCX that is basically a throw away motor IMHO.The sears model mentioned is garbage too. Sorry, but please dont waste your money.Lousy motor and lousy pump. Although the presentation is nice you will only get a couple hundred hours out of it. I run a mitm 13 hp Honda gx390 3500 psi belt drive with an AR pump. I have over 4000 hours on my washer with not one break down or hiccup. Please keep in mind you can run your washer at half throttle and use a less aggressive spray tips if you are concerned about damaging paint etc. If you do buy used look out for milky oil in pump as this is a sign of needing to overhaul pump.with the correct fittings from any hardware store the foam gun will work on almost all washers.
