I recently saw 4k TV for the first time and was impressed. A 70" Vizio P series 4k TV would be nice. There is an interesting interview with the Vizio CEO on YouTube at:
The 50" P series will only cost $999, so a 70" should be reasonable. The new 120" Vizio would be incredible.
The 80" and 90" Sharp 1080 TVs look great as well, and the newest versions are better than the original Sharps that size. I first saw the Sharp 80"...