I bought a Microsoft Surface 3 (not pro 3) because I wanted to try drawing on it. I use Paint Tool Sai to draw mostly and unfortunately I found a couple of weird compatibility issues with Win8/NTrig digitizer and Sai. If you are thinking of doing the same thing and/or run into these issues then maybe this will help you.
1. Disabling touch screen when drawing
You don't want your finger touches leaving ink on your drawing canvas randomly. Surface 3 comes with palm rejection but it doesn't work very well. You can google how to turn off the touch screen in Windows 8 and you basically have to go into your Device Manager, go under Human Inter