Have been looking at ozone 2010 range and was reading the "sales" pitch on the website "Edge says with superior upwind and downwind abilities and extreme lift for mega boosting"
So anybody tried C4 and Edge back to back and which has the bigger boost, I would have thought that the C4 would be a mega loop machine ? 
They both boost huge and hang huge .....so if you looking to make a choice between the 2 you should look at the other features. Edge has way more bottom end and has a bigger top end. C4 turns quick and loops better, the upwind ability of the edge is second to none. The C4 is better in the surf.....
The edge is awesome for racing. Josh from Kitepower jumped on my 13m edge yesterday, there was almost no white caps I was having to pump the front lines to keep the kite in the air He took off on the new underground race board and you had to see the upwind performance to believe it.
I have ridden the 11 Edge and 12 C4.
The C4 will rip you up quick and give you the feeling of going big and it does when it is maxed out in it's range.
The Edge will take you up and not feel big but you just keep climbing smoothly.
The Edge has way more grunt, does sweep turns and can be a handful (but fun) overpowered.
The C4 just felt like a nice C kite to me like an 05/06 Yarga but smoother and more refined. I bought a 9 and 11 Edge for the next season.
Which in my personal view is like a 10 and 13 quiver comparing to other SLE's.
Both nice kites - comes down to personal preference.
