This is really a great kite. Im really impressed with the kite. I previously owned a sonic 1 9m and 11m. They were both great kites in that they were fast very powerfull for their size and generated alot of lift and speed. the only thing i didnt care for was the strong pull during launching and the occasional tip tuck of the 11. The first thing u will notice with the sonic 2 is that It feels lighter in the air than the sonic 1 but definately pulls just as hard, . the kite just sits up in the air with a light feel waiting for your command. the second thing is the speed with which the kite pulls , to me it has definitely increased allowing u to move as faster to load up for whatever trick u want. they have also minimized the extreme stalling behavior which can be usefull but i dint care too much for in version 1. I didnt have one tip tuck issue once the kite was fully inflated. All in all Its a much smoother and lighter kite that maintains its Extreme lift and speed .

I had the S2 18 for several weeks but had to give it up for the S1 18 I actually bought :D

S1 is easier to jump big, S2 is brilliant on a foil. I feel the S1 has more bar pressure but also easier to access bottom end. S2 drifts amazingly for a huge noodle :o