I have a late 2013 6-Core MacPro (3.5 GHz with 16 GB ram and AMD FirePro D300 with 2048 MB). I am running a Thunderbolt display and I am want to move to a 4K display or the new 5k iMac. I do my photo editing in Lightroom and I do a lot of editing. Especially during football season. I do some video in FCPX and iMovie. My video projects are usually under 5 minutes in total length and fairly simple. I know that is not a lot to go on but I was hoping to get some thoughts on my MacPro vs a new 5k iMac. I like the 27" screen size but I just want better resolution.