I'm just one of those poor Europeans "forced" to run 12 turn motors
To be honest a lower turn motor now seems a distant memory. However I assure that we feel that the 12 are plenty fast.
The lower that I used was a "mad" 9 turn. The thing was a blast but very dificult to do the 5 minutes with it...
we were using 2000 and 2400 back then.
Then I started to aim at corner speed rather than straight line speed, so the insane speed runs I leave to my brushless (not a novak