I can't yet compare to the current gen (my late 2013 is due to arrive any day now), but after 3 years my current iMac screen is holding up pretty well. It's developed a subtle blochy haze in the two upper corners that are very hard to see except on pure white backgrounds. These developed in the last 5-6 months or so. Not sure if it's on the inside of the glass or on the LCD panel itself. It's not (yet) annoying enough to try to fix.Thanks, how is the screen quality on those compared to the current gen?