A project i am planning for this or next year, would like Novak's opinion

[ta_man]

This doesn't answer your 6S question but someone posted a vid of a Crawler running a MMP, 4S pack, and a Novak 21.5 to show how nice and controllable the high turn sensored motor could be with the MMP.

I plan to try a MMP/21.5 myself on 4S someday if I ever get time.