I just bought a Planar PXL2790MW IPS 1440p. Tomshardware gave it a great review, can't wait to get it. I was about to get an Overlord monitor (not the 120hz) kind but they are always sold out and for only $100 more I could get the one I ordered.
I was hoping to set up 2 of them running at 1440p but that's not looking like it's going to happen. My motherboard has a DVI-I, DisplayPort, and HDMI 1.4 (I think, ASRock doesn't give the exact version in it's specs). The monitor has DVI-D (Dual Link), Display Port and HDMI but the HDMI only supports to 1080p.