Most of the powertools I have are old craftsman tools my grandfather got in the 60's. They're the cast metal housing tools and are built like a tank. The only problems I've had with them is the variable speed recently crapped out in the 3/8 drill (its only wide-open now) and I need to get a repacement bearing for the jig saw, which I can find just about anywhere as soon as I get off my butt. The drill switch is another story as sears can't get a replacement, so I'm having to watch ebay for one. Still, it took over 40 years for this one to wear out...
However, if I were to buy new POWER tools, I would stay away from 90% of craftsman stuff. The hand tools are still great, but the power tools all look and feel cheap, and I rarely see a positive review nowdays.
-Harry