Hello and happy holidays. I have a real pilot's license, but just don't have that much time and disposable funds to be flying as much as I should. I've been really impressed with the X-Plane simulation products and want to invest in setting-up a potent system around it, that would include 3 hi-def displays. I'm a die-hard Mac User and wish to stay with OS-X, if possible. Obviously, there is a need to be able to swap out the video card as GPUs improve and X-Plane gets more sophisticated. In the Mac line, that leaves the Mac Pro as the only option, imo. Hence, why I'm here. I'm interested in the recommended specs for a MacPro setup with 3 screens from those on this forum who are experienced X-Plane users. From what I've researched, there appears to be 3 ways to do this: 1) Powerful GPU, with Matrox TripleHead2Go external unit ( http://www.matrox.com/graphics/surroundgaming/en/games/supported/x_plane/ ) 2) GPU with bulit-in triple output (not sure if this is avail for MacPro) 3) Network with other separate (and less powerful) computers handling scenery screens only I would prefer options 1 or 2. Thanks in advance!