Need quick help - motor decision 7xl or 8xl? (9xl?)

[R00ST]

Alright I know ive posted this before, and was pretty well decided on the 7xl/9920 combo, but I keep seeing those who run this combo and they are having some pretty low runtimes (10ish mins)

I will be running 14 cells most of the time (some 12, possibly 16 later on down the road) in the e-revo.

I know 7xl is in its prime (right?) for 14 cells, but what about 8xl? I know the 8xl/9xl guys are talking 20-30 mins, which is really what I need.

I would like to order tonight, so any input is greatly appreciated!