First I got to say this about the surface pro line, I never been so happy and satisfied with a computer ever.
Smooth updates, active communities like this.
I do a lot of photography so for me the SP line was pretty given since it's very portable and I can do touch on the fly with a great pressure sensitive screen and pen, I love it!
My son spilled a glass of juice on the keyboard and it got wasted, picked up a new keyboard on eBay that cost less then what it would've costed to service a regular laptop.
Build quality is truly amazing and hard to find flaws with it.
Been looking at the surface book, but hard to justify the price when the surface pro line is so good unless you really need the extra horse power the powerbase offer on the surface book.
Just a few thoughts