I recommend to just go to best buy or even walmart and window shop the tvs.. pick the one out you want and then find it priced the best online with google /amazon/ebay/or whatever.
Walmart is also price matching amazon now I believe so if you find a great deal there you can pull up the sale in store and get price matched and take it home that day.
I doubt you will find a 65" Vizio for $699 that would look as good as this LG. LG has higher end models but wouldn't be considered the "best deal" like the original poster was requesting. I have a 47" LG but it was twice the price of this 65" and the picture is fantastic.
I have a 65" Panasonic Plasma and hands down the best picture I've ever seen. But it won't be anywhere near $699