Getting back on topic (Windows be damned), I’m now looking at the 12.9" iPad Pro. Not much difference between the 2015 and 2017 versions I can tell. Slight processor bumps which don’t matter in sketching, more screen brightness (never an issue).
128Gb 12.9" (2015) Wifi + Cellular OR 64Gb 12.9" (2017) Wifi + Cellular + $150?
R