TV Guys I need help!

I am posting this here because I figure more of you TV fellas will se it rather than posting it in the HT section.

I am going to be buying a new big screen HDTV monitor very soon, I was wondering if you could be of some help in helping me make a decision.

Now due to my area I am limited to most likely buying from either Best Buy or Circuit City. Also My spending limit is $2000 I would like to spend less though if I can $1500 or so would be perfect. I also only am interested in in a 16:9 movie theater shaped screen. Now I will post links to some of the ones I have been looking at and mebbe you guys can tell me what you think. I really don't understand any of the specs or nothing. I do know that by going and looking at them that I do not like the TV's where I can see lines in the picture. I also know that being rear projection TV's and by looking at them there is a "sweet spot" to sit and watch and that when you move out of it the picture degrades. I would like one that has as big of a "sweet spot" as possible.

The contenders:
http://www.bestbuy.com/detail.asp?e=...t=24&scat=1470

http://www.bestbuy.com/detail.asp?e=...t=24&scat=1470

http://www.bestbuy.com/detail.asp?e=...t=24&scat=1470

http://www.bestbuy.com/detail.asp?e=...t=24&scat=1470

http://www.bestbuy.com/detail.asp?e=...t=24&scat=1470

http://www.bestbuy.com/detail.asp?e=...t=24&scat=1470

http://www.bestbuy.com/detail.asp?e=...t=24&scat=1470

http://www.bestbuy.com/detail.asp?e=...t=24&scat=1470

And at Ciruit City
http://www.circuitcity.com/frame1.js...ftchildcat.jsp

Models

GE 40" D40GW10

RCA 52" D52W20

RCA 40" D40W135D

HITACHI 43" 43FWX20B

HITACHI 51" 51UWX20B

Any and all help and advice would be greatly appreciated since this is a big investment for me and I want to make a good choice.

I will say I was very impressed with the http://www.bestbuy.com/detail.asp?e=...t=24&scat=1470 I saw it at Circuit City and I don't know if it was just at the right height or set up perfect but the picture looked better and sharper and brighter and clearer than all the other TV's there.