Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
I'd get the iMac for the reliability factor. Of course it hasn't been out for long but it won't have the Touch Bar nor the keyboard issues. The larger form factor and upgradeability of RAM is nice too. I am looking at an iMac 27 myself.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.