We had a DLP for a few years. Heads up, the colorwheel went out just before the 2 year warranty was up. The lamp about a year later. Very expensive repairs.
I have a Samsung 40" DLP, now about five years old. It has been used sparingly enough that I've never had to replace the lamp... but the colorwheel motor has been making noise for some time now. I know it's just a matter of time. Replacement cost for both parts would be somewhere around $200, as far as I can see. Just wondering whether it's worth the effort, since I can get a brand new LG - 42" Class 1080p/120Hz/LCD for about the same price at BestBuy...