As the title suggests, I'm wondering whether the 4k iMac is worth an extra $200? I'll be upgrading from a late 2010 13" MBA so both 1080p and 4k will be a massive step up for my eyes. I know that for my kind of usage (office productivity, casual photo and video editing, light gaming, movies, etc) anything is OK, but I would like to get the most out of my money if I'm spending so much. Of course, a 4k screen will make doing all the things I do look better but is that really worth $200? Thanks in advance for your help!