iMac Pro

iMac Pro, now I have looked at those machines, but something does concern me enough that I am waiting for a Mac Pro. I have an iMac I got a few years ago, which renders videos within fcpx a lot faster than the MacPro 2012 I have, and even faster from the 12 core mac pro 6,1 my friend has. this speed gets a lot slower if you do more than 1 pass encoding for better quality, because of limitations of quick sync. The iMac also thermal throttles, and runs hot a lot of the time when stressed, and this is why my concern is. longevity.
I built a pc for use with after fx for my 3d editing which then gets ported over to the mac when finished. I also game, so the pc isn't just a one trick pony.

unfortunately, I haven't used an iMac Pro, so can't say its an amazing machine. My experience with iMac thermal throttling put me off it.