Others want PQ. As to the best color depth that would be plasma. While there is some question about static images so far plasma (if you can find it) wins.

As to beyond 1080, there's 4K but you would have to really amp up the GPU section.

As to 3D, http://www.thewrap.com/legend3d-founder-99-percent-of-3d-is-embarrassing/ covers a few points. Most of it embarrassing.

Gamers sometimes hunt for that elusive 120Hz display. Given your post I'm unsure which direction to head. PQ or gaming?