What should i look for in an LCD flatscreen tv?

im wanting to keep my budget around 600-650. id like it to be around 42in or bigger if i can find it im my price range. what should i be looking for to make sure i get these features as well as good picture quality? any suggestions on particular models/ brands and places to buy would be great. also help me... show more im wanting to keep my budget around 600-650. id like it to be around 42in or bigger if i can find it im my price range. what should i be looking for to make sure i get these features as well as good picture quality? any suggestions on particular models/ brands and places to buy would be great. also help me understand the contrast ratio and HZ features importance
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