I'm very happy with my new Surface Book. I never thought I'd like the touchscreen as much as I do. I LOVE being able to go to tablet mode for calls and stuff where I sort of want to just wander around. The pen has completely changed how I do flow-charting and wire-framing.
The new Linux subsystem thing is a god-send. It was completely seamless for me to transition from the Mac to Windows pretty much solely because there wasn't really a transition. All our provisioning and development scripts just worked.
It's been fun to do a bit of gaming on it too :)
The touchpad is really the only thing that I think compares poorly. Apple really nails that whole experience. After a few weeks I'm getting better with it, but it's still painful compared to the precision and certainty I had on my Macbook Pro.
I'm sure I'll be back on a Macbook someday (cause hey, change is fun) but no regrets right now.