I have been waiting for the official MacPro release so I can make a decision between getting a new iMac vs. a MacPro. I am almost certainly going to get an iMac, though I just want to see what other think. I do work with Illustrator, Photoshop, Lightroom and Premiere. What types of functions will the new MacPro do significantly better than a new iMac? And, should it be a huge improvement in performance justifying the cost or not? Thanks.