Well I am pairing a MacBook Pro 15" with a Dell XPS 13" 9370.
I bought the XPS 9370 a month ago for $1200 new. It comes with 4k ,i7/512GB/16GB Ram as I was looking for a cheap secondary computer. I even was thinking about the iPad Pro with the pen, but needed full operative OS, saw many options. Even SurfaceBook 2, Surface Pro 6, Surface Go, Matebook X, but saw that for $1200 these specs where the best I could get. As I would be using Adobe Suite on it and needed something very portable for travel, that my MBP 15" couldn't offer when you compare the footprint of the XPS 13.