Sticking with Mac. I work with Windows all day at work and at the end of the day it's nice to come home to something that just works. One of the things I don't like about Windows, is the lack of intuitiveness. Windows 8 was the worst offender - little wonder it never took off. Charms?? Now 10... ugh, no thanks!
I've worked on a number of Windows laptops from a variety of vendors over the years and the build quality has been consistently poor. Toshiba, Acer, HP, etc... In addition, they never last more than 3 years before the OS runs like molasses. Case in point, we just recently recycled a number of Windows laptops after 3 years of service. In comparison, my 2012 MacBook Air runs as fast or faster than some of the brand new laptops I've come across. So while reviews for the Surface Pro build quality are generally good, I'm betting after 3 years it's going to run like every other Windows laptop... like a sloth.
Not saying Mac OS is perfect but I'm happy with it. I wasn't thrilled with the new MacBook Pro either - just personal preference but I feel the glowing logo and Mag-safe are part of what defines a Mac for me. So I got a loaded 2015 MacBook Pro while I could and I'm quite happy with it. I know I'm losing out on a bit of performance but the gap is not so wide that I feel like I'm losing out.
I'm selling my Air soon to a co-worker and I have to admit, I'm tempted to keep it as it was my first Mac. Only thing preventing me from doing so is knowing that it's just going to sit on the shelf gathering dust.
So based on my experience, switching to Windows over disappoitment with the latest MacBook Pro seems a little like cutting off your nose to spite your face. But hey, it's your money so spend how you like.