Dan...I'm jealous...I want a power-washer pretty badly.

However, the best tool I've bought would have to be my Leatherman. I wear it daily, and rarely go a day without using it to some degree. I can poke things, cut things, pry on things, bend things, destroy things, & file things. Truely a great asset to the DIY'er. Granted, it is not the BEST tool for "every" job....but it's a Jack of All Trades and Master of None. Very handy to have on the side.

Max