As much as I don't like Ultimate electronics, I would HIGHLY recommend them.
I couldn't agree more I know you probably have already bought it.. But I have worked in Sales of electronics my whole working career. I was a floor manager for Ultimate Electronics for a year before the military.
While my opinion of them doesn't matter they will take care of you. take a look at the Samsung televisions they have there and take a look at DLP technology. Don't get a off brand television because you will end up wasting your money. Don't settle for anything less than 1080p or 720p. Do not under any circumstance get a plasma or a television with 1080i..
The difference between the two is simple. 1080i stands for interlaced . This means that every other line on the TV is on and switching back and forth. P is every line on at the same time providing a more clear picture.
Also if you get a TV from Ultimate get the 5 year protection plan . Trust me You will use it on no matter what TV you get and you also get a free cleaning on the tv as well.
If you get LCD make sure you get the highest contrast Ratio you can afford.
In conclusion I would if I were you .. I would get a DLP television. Samsung or Mitsubishi .
I have the Samsung DLP 61 inch. Beautiful television!
Good luck