Why LCD and Plasma? 37

It seems to me that LCD and Plasma are discussed most when it comes to TV these days, is there something wrong with other formats such as DLP, 3LCD, etc.?

I would like to purchase a new TV for our bedroom and I was looking at the $800 range, this had me loking at 32" HD TV's, at least those of quality; I'd prefer slightly bigger. I happen to look at a 37" Sony (KDF37H1000) that I thought looked nice, just under $900, and I saw that it was 3LCD, this is a rear projection TV.

Why do these formats get little discussion?

Any suggestions for a 37" (or larger) HD TV for a good price?
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The new Perfect Vision has a very interesting article on the future of DLP. The bulb still wins (and the Sony SXRD gets very high marks). The bulbs are environmentally hazardous because of mercury contained. There are alternatives discussed, but the raters don't find them to be there yet. However, the technology is still progressing. It may not be RIP for DLP.
I suspect this won't be until some time after the mandated 2009 digital switchover.

I heard in 1997 that the original mandate was for complete digital switchover by 2006. You can see how that turned out. :)
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Tvad, I will begin by saying I am NOT a videophile. However, I spent considerable time investigating before buying a plasma TV. I replaced a 32" XBR CRT. I chose the Pioneer 1080p plasma because of how it dealt with Standard Definition programing and older movies. This is what separates high end TVs in my opinion. They all look great in HD with a HD DVD running. I have been very pleased with my choice and would recommend this TV. As in audio, let your real life observations rule over the spec sheets.