OP: If you are strictly choosing between those two, go with the Vizio P series IMO. Great for gaming as well with very low input lag.
Serious question: Whatever happened to Picture in picture? That shiz was the shiz and now nobody adds it as a feature anymore.
I wonder what the point of 4k is when most television programs don't even broadcast in 1080p. It's mostly 720p stuff still. Ridiculous. They've had so long to upgrade and nothing. Garbage quality. I hate having to watch Game of Thrones and the dark scenes have so much macroblocking. It's awful. The only option people will have is buying 4k blu rays and some extra pay options on apps. That's not good enough to get me to commit to a 4k tv right now. If HBOGO announces they will offer 4k for their content, i might bite, but HBOGo doesn't even do 1080p, it's only 720p while HBONOW is 1080p.