I just got a Samsung DLP rear projection TV a couple months ago. Most DLP sets do have a bulb to replace, and color wheel to break, but this year Samsung introduced a DLP TV using 3 LED's for its light source. This eliminated the replacement bulbs, and the color wheel. I got a 61", but the do also have a couple 56" & 50" sets available. Last time I looked Amazon was the price leader on the 61" at ~$1,900.

Pros:
LED light engine, no bulb or color wheel (Also no color wheel no rainbow effect)
Very good with lots of ambient light, with fantastic color reproduction.
Full 1080p
10,000:1 contrast ratio, good blacks.
DLP is free from burn-in
Picture in Picture
Very affordable.

Cons:
Viewing angle is important for best picture, both vertical and horizontal. It still looks good though when you are outside the "sweet spot."
1080p60, so it won't play back HD media in 24fps.
LED light engine is new tech, I believe they have started on the 2nd gen sets now, but there is no definite reliability data. But the LED's should last 20,000 or 200,000 hours... (don't remember which)

I am really happy with mine, and would buy it again in a heartbeat! Best Buy & Circuit City should have it on their floor if you want to look at it.