If your 4K TV is a Dell P2815Q then your are stuck at 30hz when you use full 4K res. 3840x2160. It could do 60hz refresh rate at 1920 x 1080. Hopefully Dell may have a future firmware upgrade. But by then even Seiki will have HDMI 2.
The Eizo 277 is nice colour reference monitor. I was thinking of getting one. I would like to know how accurately it self calibrates.