1st i would like to say i love the look of the 2.7 30 fps, BUT it does show much more jello, normally my 6 inch is pretty darn clean, but after this flight my motor fell off, I had lost all the motor bolts, so normally I do a little pre fligth manteince but this time it slipped my mind, Some people trip out when I tell them I fly 1300 4s on 6 inch with such powerful motors but as u can see its really quite efficient, more about throttle control, and the primo 2450 have a ton of top end speed so at mid throttle it is fast and efficient. If you guys have any questions leave me a comment. Thanks for watching. /