One factor to consider (if relevant) is that Microsoft office on Mac is a bit shit, and mixing versions of the same file on Mac & PC can lead to unpredictable results.
I don't have strong feelings either way, but I would be loathe to lose the upteen years of experience on PC for Teh Shiny. In my case, every now and again I need to reach back to STUFF I've done and programs I've got, or out to open source, so sticking with PC is the one true way for me.
At work, %Megacorp have recently added Mac as an option alongside Lenovo MS laptops. Observing users who have reached out to grab, I'd say that the average Mac user is no more productive, that the issues like screen display, file and app compatibility often bite deep, but they do look pretty. Oh, and when I see people who know how to use them doing things like using their iPad as a two screen setup I am occasionally jealous.
These days, performance and usability appear to be roughly on a par. There's no knocking the quality of the Mac, but with W10 and SSD it no longer holds the high ground the way it used to. You pays yer money and takes yer choice.