As someone who has been on MBP's for the last 7 years I recently jumped ship for 15" Dell XPS with Windows 10 and I am happy I did. However, that is because to me Win10 is now way more appealing than OSX. I hadn't updated OSX since Mavericks because there were exactly 0 new features that interested me. I don't have an iPhone/iPad/iEtc and I don't use the built-in OSX apps and it honestly seems like those two thing are all that Apple has cared about with OSX in recent years.
It wasn't easy to find a laptop with hardware that is acceptable coming from an MBP, it was a short list. But OS wise, Windows 10.1607 is, for me, way better than OSX at this point. IMO OSX feels dated, and toy-like compared to what Win10 has become. I was a heavy terminal user in OSX, like many dev's it was the *nix part of OSX that got me. But now with both the updated command prompt and WSL I don't miss the terminal, period. Also, Win10 virtual desktops already work better than OSX!