two monitors to a computer, two computers, also have a 13" macbook pro which is currently the primary computer...
i found that three monitors is not any better than two, but two monitors on two computers is a lot better...also two monitors are a million times better than 1, I go crazy trying to work on one monitor now...the only bad thing about multiple computers is that its kinda a pain to have to swap files and you cannot copy and paste whats on one screen to the other computer although sometimes i still try not thinking...other than that two computers is great...can do a lot more multitasking and never overload one computer...