I just purchased a Sony TV (KD-34XBR906N) from Abt electronics. The reason I bought it from them was it was on sale for $300 less, they're an authorized sony dealer and read good review about them. They have an online live chat if you need to ask them any question, which I found useful. They do price matching and have extended warranty (4 year plan only). You can still get the extended warranty even after you buy it, with a certain about of days after purchase.
One problem I had was that they didnt email or phoned me about the tracking number for my order. I had to call them for it. The shipping part was ok. Since it was free shipping it took a bit longer than I had expected, about 9 buisness days. Everything had turned out alright