In case you are an illustrator and interested in the Surface Pro 3 as your mobile workhouse, you might be interested in my first impressions and my report after using the SP3 i7 together with a Cintiq 21UX for 4 days – which i wrote down for a thread at the surfaceforums.
You can find the thread here:
Long story short: the drawing experience is inferior to what wacom devices offer. The computing experience is almost excellent. I’ll probably return it because i don’t need another computer, i was hoping to get a one device mobile drawing solution when i purchased the SP3 i7.