At home I have an Asus 23" LED and a 21" Acer on my XPS8500. My iMac is a 2010 21.5" and I have a 17" toshiba laptop. I'm planing to get a Dell 27" WQHD to replace the dual monitor on the Dell, because the dual monitor setup is starting to give me a pain in the neck after working for hours on a PS comp. It's like watching a tenis match, left, right, left, right... beside since I'm using a tablet it doesn't really work in a dual monitor settting so I have to grab the mouse to select in the second screen.
Of course if I had the money I would get a Cintiq 24HD Touch 😀
I'm also planning to retire my iMac and get a Mac mini if they release one with Iris Pro. Or I may replace the iMac and the Toshiba laptop with a MBP Retina after the next update.