Buying 55" LCD help?

[NicholasCage]

I really need some expert help or some people with knowledge of LCD TV's.

So I am planning on getting a 55" for my Living room. I pretty nooby at TV's so I need all the help I can get. I'm sort of looking for a "budget" priced TV. Looking for something under ~$1700 range, cheaper the better.

Here's some TV's I've been looking at.

http://www.walmart.com/catalog/product.do?product_id=10993799

http://www.bestbuy.com/site/Sony+-+BRAVIA+/+55%22+Class+/+1080p+/+120Hz+/+LCD+HDTV/9476373.p?skuId=9476373&id=1218111856781

The Vizio I can get for about $1,299.99 at Costco on Black Friday. Not sure if I should get it though.

Thanks ahead of time for your guys input. Suggestions for TV's would really help.