Are you talking about tiling window managers on OS X or in general? If it's the general case, I have to disagree. XMonad is absolutely fantastic on multi monito

Are you talking about tiling window managers on OS X or in general? If it's the general case, I have to disagree. XMonad is absolutely fantastic on multi monitors. The two things I liked to most were Mod+e or Mod+w to change focus to the previous and next monitor, and the ability to actually move an entire workspace to another monitor with the press of a button. This is obviously just my opinion. In the end, it's a mere matter of personal choice.