I use a two monitor (Windows setup) at work and currently at home. Once I go iMac I might just drop it down to one screen while at home. My question is for those going from two to one... how was it? Did you miss the second screen? Is the 27 in screen enough to maybe have YouTube open on one side, with a browser/word, etc on the other? If so, does OSX have the capability to "dock" two windows equally like Windows does? If I do decide to go two monitors, I have Dell 24inch. I take it I would need a Thunderbolt adapter in order to use this monitor, correct? Thanks for any advice/assistance!