I use three 32LN5300 LG 32" LED TV (IPS) and I haven't had any problems. They have 4:4:4 and you can turn off everything that causes input lag by renaming an input to PC. I've found they work best with HDMI-DVI cables but even the one I'm using with just a HDMI cable I have no issues with. I came from 27" 2560x1440 Crossovers and the dot pitch doesn't bother me.
2013 LG LN5300 LED HDTV Review
The best part is they're under $300:
Amazon.com: LG 32LN5300 32-Inch LED-lit 1080p 60Hz TV: Electronics