i jsut picked up a 42" vizio lcd from walmart this weekend and i love it! It seemed very comparable to the other brands but a lot closer to my price range. i would recommend it, i like their smaller tv's too, they also have excellent picture in my opinion.
Be careful with buying the vizio or other no name brand displays as you get what you pay for. The internal parts are cheep and may not last long. Walmart is notorious for buying the lowest cost electronics and dont care about how long they will last.
I have seen the odd under 50" Sony and even Toshiba displays go for under $1000 They would be a much better choice.