Check the number of inputs if you plan on hooking alot of stuff up to it. (DVD, VCR, Blu-Ray, Game Consoles) Just compare the TVs side by side and see what picture you like the best for your price range.

You might want to check out LG and Toshiba TV's. They are both good quality and well priced. I work in an Appliance and Electronics store and I am not on the sales floor but I notice what goes out of the door and those two are our biggest sellers and we don't have that many of them come back in for repair.

I would look at going to a smaller "hometown" store. Even if you have to pay a bit more it is worth it for the service you get. At Walmart you will have to send in your tv to get it fixed and you will be out of a TV for a while. The smaller stores usually have a service center and they will be able to get it fixed much quicker.