I work for Microsoft, but I got my Surface Pro 4 before joining. For me, the pen is a required feature, since I have been using a ThinkPad X201T for a long time. While NTrig2 is still lacking for painting (compared to Wacom), it is actually better for note-taking and diagram-drawing thanks to much less parallax. What makes SP4 stand out when I purchase is its small size and detachable keyboard. The competing Vaio offering was way too expensive while featuring only last gen CPU.

The firmware/power-related problems have been solved in the Creators Update.