My advice is to go with the iMac. As a former Mac guy at a small college, I know the money issue is big. Go with the iMac and upgrade the RAM, graphics card, and display. You'll get a very capable iMac for $2300 as opposed to a rather hamstrung Mac Pro. The Mac Pro is great, but you really need a ton of RAM to get them to perform as you would expect them to. Plus, if you're running any apps via Rosetta, RAM will be pretty important. Plus, you can't overlook the advantage of the iMac in cutting down cable clutter.