I'm in the market for a new computer and leaning toward Apple's 27" iMac with 5k display. I currently use NEC's MultiSync PA241 monitor with built-in SpectraView calibration system which works very well. Color is accurate and the matte screen is calming on the eyes. I've read that the 5k Retina screen can't truly be calibrated, but you can only do something called "faux calibration." I'd like to hear opinions from folks in the field who have had experience with the Apple 5k display and anyone who has other suggestions for alternate setups. Thank you!