I am looking for a new monitor in the 27-28" range. I edit mostly HD content, but also some 4K. My price range is up to $1,200.
For HD you should consider the Dell UltraSharp U2413 it is a 10-bit monitor with 100% coverage of sRGB and has a built-in hardware 14-bit LUT. With just a little bit of work you can get it to a pretty much perfect broadcast output. It is only 24", but it is 1920x1200 so the output is true pixel to pixel, which I find is more important than size. You can get it for under $500.
For 4K you could go with the UP2414Q or if you prefer 27" over 24", the P2715Q. Although the P2715Q is not a "Premier Color" monitor, it still gives you a 10-bit display and 99% sRGB coverage.
Thank you, Top Ray Gun. The P2715Q looks like it will meet my needs best.