I'd like to think the OP for starting this thread. I would not have bought my Samsung UN65F8000 if I had to pay the Best Buy or Amazon price for it. In the end, I went with All time TVs. They basically have the same business model as East Coast TVs and it appears that their prices move directly in line to match East Coast TVs (or vice versa). The reason I went with All Time TVs is because they have a buy safe guarantee, which means that you can get up to $100 back as a price match if the price goes down (at All Time TVs) within 30 days after purchase. I do not believe that East Coast has this option. Of course, check with your credit card company because some credit cards offer their own form of price matching. I believe mine will match up to $250 over the next 120 days. So as these websites tend to move their price around every couple days or so, you don't have to worry about missing out on the price savings.
I got my warranty (1 year manufacturer + 3 yrs= 4yrs total) via square trade from Costco (i'm a member) for only $99. (You don't have to buy the tv from costco).
East Coast, All Time TVs, and their competition have a different business model than the the regular retail guys(amazon, best buy, etc). They're only trying to make $40to $60 on the TV, but they will try to make more money by selling you Cables, warranties, or mounts, and white glove delievery. If you call them directly and already understand that you will have to pay somewhere from $50 to $100 for "shipping Insurance" you'll realize that you're getting a great deal. I could see it definitely leaving a bad taste in your mouth if you place the order online and it says no shipping costs, and then they call you back and require insurance and try to sell you other things, but it is so worth it. I wouldn't get the white glove delivery (which initially costs $100, but was offered for as low as $40 by the end of the call, and I still rejected it because I can open my own box, even for $40) because the delivery guy had to open the box anyway and plug it in to make sure that it turned on, so that I would sign for it.
I ordered my TV Dec 9 and it came exactly 1 week later. Saved over $700 or about 25% by not buying it via Amazon.