Amazon is the ONLY retailer I will purchase my main tvs from.
Last year, purchased a 40ex720. It came the next day because I have Prime and I paid $4 for 1 day shipping. The unit was riddled with dead pixels, like 35. I called, and the lady i spoke with apologized and went to do the swap for a new tv. She came back after a few minutes on hold and told me they just ran out of the 40ex720s, so she upgraded me to the 46ex720, which was literally $400 more, for free. I shipped the 40ex720 back the same day, and when UPS had confirmed pickup, Amazon shipped the 46ex720 to me, i had it the next day.
So within a 48 hour period, I ordered a TV, returned it, and received my upgraded replacement for free. 48 hour period, no shipping charges, no restocking fees, and the Amazon rep even gave me a $25 promotional credit for digital purchases for the inconvenience.
This is only one of the many successful purchases I have had on Amazon, they offer the best service and return policy (Not just on TVs, for basically every item they sell too), the best prices (they price match pretty much every big TV seller), and the fastest shipping.
No reason to buy from anywhere else.