I have had a number of electrics ranging from a $100 C-H 1300 psi unit to a $200 Craftsman 1700 psi unit, the cheapo C-H outlasted the twice-as-expensive Sears washer by a year.
My current electrics are both C-H 1750 psi models, one is three years old and one is two years old, for about $125 they are the best I have ever owned for the money.
They are powerful enough for deck cleaning bu it takes forever, so I bought a gas machine....it's a 6.25 horsepower Tecumseh engine Craftsman, 2100 psi. After 3 years it still works like new, but it gets little use. It was a clearance model at Sears, someone returned it because it was hard starting....original price was $400, they marked it down to $225, took it home....well, the spark plug gap was almost completely closed, five minutes of work and I had a nearly new washer that started fine for about half price... /forums/images/graemlins/grin.gif.
One thing I really like about the design is it uses the same oil as the engine uses to run the pump, which is mounted directly under the engine itself. Every time I change the engine oil it also supplies new oil to the pump.
Something you want to look for in a pressure washer is the quality of the hose and gun, the cheapo models have a small hose and a plastic gun that lasts less time than the washer itself, if you pay more money for a quality hose and metal gun in the beginning you will come out ahead. The plastic guns cost about $30 or more at TSC and are a waste of money. If you need a quality replacement hose and lance for a washer, check Northern...theirs are excellent and well made for the price.