Looking at a tv at a place like best buy is fial, most of the time all the settings are all out of wack thanks to 023940392 customers pushing 2938409324 buttons.
find a good A&V mag/website and read reviews from the pros who do nothing but TV reviews.
Once you find a good tv, check out places like sams club, bjs, or cosco, if you're willing to buy it on the internet then newegg com is the best place, in fact check the top of this thread you'll see a link to new egg, if you click it and buy something B will recieve something like .46c
I've bought at least 8 tvs from newegg, they always show up in 2 days with free shipping.