I currently have a 2010 Mac Pro with a 27" Cinema Display and a 27" hardware calibrated NEC SpectraView display. I also have a 13" MacBook Air which I need to replace. I do film and photo editing on the Mac Pro and want to continue doing so for another 1 or 2 years, before I start to consider upgrading it. I use the MBA for most day-to-day tasks and writing. I am thinking about replacing the MBA with either the new 13" MBA or the 13" rMBP, but - silly as that may seem - I am seriously concerned about the retina display of the rMBP ruining by Mac Pro experience. I won't be able to replace my two non-retina 27" displays with retina versions anytime soon (there aren't even any available ATM). What if I get used to the sharpness of the rMBP and then start to find the non-retina 27" displays unpleasant? Is that a valid concern? Or am I being silly?