For the price, you may as well buy this:
http://www.amazon.com/Samsung-LN52A6...9239363&sr=8-1
Overwhelmingly positive reviews on this one, 4-5 times more than any Sony you'll find on Amazon. In fact, check out any of the LNXXA650 models and you'll see a shit ton of positive reviews.
Not saying Sony is bad by any means, but the Sammy reviews don't lie.
I just went down this rode and chose a Sammy 52A650 over a 52V5100.
Mike