I used three monitors, my main monitor in the center being the ACER X34. I had two 1080p monitors as bookends and really liked the setup. I have a corner desk and all of the monitors fit pretty well along the walls/turn in the desk without using up too much desk real estate. I had to give up one of the monitors for my daughters computer but all is well, they are coming along nicely.
You can also get some advices from the link.
http://pc4u.org/best-gaming-monitor/
