What's the best neu on 6s in an e-revo ?

great choice of motor i have one forsale if your interested

[speedy]

what gearing would be good for that 1515 2.5d (1650kv) motor ? For hard bashing offroad ? oh and woud the 2200kv 1515 motor work on 6s ? The castle new mt combu uses there version of this motor right ? I was thinking that the 2200kv motor might be better for me because then i can run 6s for bashing and 4s for racing and get good preformance with both battery set-ups?