Thinking about buying a new desktop machine, I'm torn between two options. Both cost $800: Mac Mini (New) 2.5 Dual-Core i5 4GB Memory 500GB HD AMD Radeon HD 6630M Mac Pro (Used) 2.66 Quad-Core Xeon 5GB Memory 1TB HD GeForce 7300 GT 256MB It's primary function would be running Adobe Creative Suite. Currently I use a MacBook Pro (late 2008 unibody) connected to an external display. It works okay, but it's far from the Mac Pro I use at my studio. Any guidance would be appreciated.