I've found this to be the optimum as well. The fact that you can have 2 1080p monitors worth of display height stacked on top of each other is invaluable when

I've found this to be the optimum as well. The fact that you can have 2 1080p monitors worth of display height stacked on top of each other is invaluable when writing code/reading docs. For the other half of the monitor I can usually split it up between a browser/target app I'm debugging and something else, which usually varies by the actual use-case.