Having to replace my Panny, need advise!!!

[abynum1]

Hey guys. I have the TH-46PZ85U which is approx 1 year old which I bought new off of Ebay. Because I bought it on ebay and not from an authorized dealer, I had to get a Square Trade warranty.
Anyway, the power went out to the unit, and the warranty company has been going back and forth on parts and advised me today that there is a very good possibility that they may just refund me my purchase price instead of repairing it.

I paid 1290.00 which was about 700 cheaper than Best Buy was selling them for at the time.
After doing research, I found that I can now get a 50" for about the same price as the 46" cost me back then.

These are the 3 models I'm looking at:
G10 1799.00 @ best buy
U1 1399.00 @best buy
S1 1199.00 @ best buy (on sale)

Now it seems that all 3 sets are upgrades from what I had but I'm stuck between the s1 and the g10. I dont like that the u1 doesnt have the anti glare (plus the s1 is on sale for cheaper) so it's between the g10 and the s1.

I need help on deciding between those 2 as the 600.00 difference is a lot to me.
I don't need any of the internet features as my internet sux here anyway but I'm not sure exactly what the THX on the g10 really means.
I guess I just need to know what the extra money for the g10 will really get me over the s1.
Also noticed on the specs, all 3 have "no" listed under digital cable ready.
I have DTV HD, so is that going to effect me?
Thanks for the help guys.
Oh, I almost forgot, just in case it matters, I never had my old set professionally calibrated. I used settings posted on the forums and ran the break in disk and I absolutely loved the picture.(So that may give you an idea of my taste just in case one of the sets looks different from the others.)