The Surface Go is a super portable 2-in-1 that's great as a second go-anywhere machine. Unfortunately, battery life isn't great and once you've added the accessories it's not cheap. But for a portable machine there's little else to take it on.
Highly portable, MicroSD slot and USB-C welcome, Robust kickstand, Excellent optional keyboard
Accessories up the price a lot, Battery life is middling, Massive bezels, S Mode will be limiting for many