I would keep Panasonic, not because I know the brand well; but, because I dislike Vizio. Bought a Vizio 40" for my workout room to replace a Samsung. Picture quality, I cannot tell much of a difference. The sound is much worse than Samsung; and don't get me started on the remote.
Spending $3k for a failed $900 plan is never good. I suspect you can get the same TV for $3k on normal days. Return that $3k tv and at this point, might as well start looking at what Cyber Monday has to offer.