Well, the new Mac Pro definitely threw a spanner in the works I think. It's an intriguing machine, and I gotta say, I quite like it. I'm a professional video editor, and I currently use the rMBP for my work. I'm wanting to upgrade to something more powerful, and a maxed-out 27" iMac was looking like the way to go. But this new Mac Pro looks good too. All of my editing is done to external RAIDs, so the lack of internal storage isn't a biggy for me. What I'm wondering is; in terms of performance would I really notice the difference between a maxed-out iMac and a Mac Pro? I realise that technically the Mac Pro is a lot more powerful, but for video editing is it really going to show?