vapor has heeps of low end when you get your speed going, its a very fun fast kite. flow is like a truck. i think flow would be kinda nice for wakestyle but i prefered the vapor, i rode a 10m and found the bar pressure near perfect, i never bothered playing with the 5th line like matt suggested though. I say the 10m needs a 45 or 50cm bar at most, almost TOO fast on the 55