I bought a Briggs and Stratton powered model about 8 years ago at Tractor Supply. It has a 5.5.HP engine, it is rated at about 2200 PSI. I still have it, but about 4 years ago, I had to replace the pump, due to my own failure to properly prepare it for winter - there was water left in the pump and it cracked when it froze.

I've found it to be reliable and it does what I need when I need it - I only use it occasionally. One bit of advice about cleaning decks - be VERY careful, you can easily tear into the wood, leaving ugly scars and ultimately ruining it. Keep a wide fan pattern and don't "dig in" with it.

One of the more interesting uses I have for my pressure washer is clearing leaves and stuff out of my gardens. I set a wide fan pattern and spray at the base of my azaleas and it cleans out the dead leaves better than the air blower.

OK, on to the electric models.

I picked up one of those 1200 PSI electric models from Home Depot and I was extremely disappointed in it. Aside from shoddy construction, in use, the pressure was barely more than that of a garden hose and at lower volume. For some limited applications - washing a car, maybe washing out a trash can - it might have been acceptable, but there's no way that I would be able to clean mud out of the wheelbarrow or blast the henhouse walls clean for the spring clean-out.

So, yes I prefer the gasoline-powered models. But once again, I ponder WHY we don't see more propane powered yard equipment for homeowners. Especially stuff that's likely to sit and not be used for a month or so - I know that I manage my gasoline collection well enough, but I'd rather just strap a 20LB tank onto something and start up rather than working about the ethanol devouring seals, the gas oxidizing or lacquer forming inside.