I know I'm getting into this late, and assume that you've made a decision by this point but reading your original post made me think of where I was last August. Similar situation but I had a little more background with TVs. I've got Dish as a source with an OTA antenna for local HDs. We had a 50" 4:3 Tosh CRT based RPTV, HD ready. I went through everything out there and immediately threw out LCD/Plasma for price and picture quality reasons. Plasma is getting better but I don't need the space savings so I won't sacrifice PQ. So it's up RPTV, stick with CRT? DLP? LCD? LCoS? LCD I didn't like at all, worst picture by far, worse than Plasma. CRT TVs are way too big for the screen size I want (61" means 300+ lbs), although as others have mentioned, very very good PQ, probably still the best. So that leaves DLP and LCoS. I do home theater installs on the side and through distributors can get Samsung and JVC (along with a bunch of Plasma and LCD TVs). So, although I compared all DLPs to the JVC LCoS I really focused on the Sammy DLPs. We bought a JVC 61Z585 and couldn't be happier. SD looks, well, like SD. But, it's very watchable on all channels. I'm sure the Dish and it's all digital broadcast helps in this matter. DVD is stunning. MUCH better than with the Toshiba CRT HD ready set we had and better than the Captain Kirk Sammy's I've seen. Better colors, detail, the picture just jumps off the screen. And HD, well, some channels are doing HD better than others, but when you get a look at ABC or FOX doing football in HD - damn, you know why you bought the set! CBS really does a crappy job with HD, but hopefully they'll come around eventually and it's still better than SD. The JVC gives you a big, bright, colorful picture with no screen door issues, no rainbow issues, and comparatively a great price too.
Good luck!