had the same inquire some time ago, didn t like my 12 AR wave,big and slow ( but love my waves 9 and 7) so i went for AR Ultra 10 instead of a 12 Wave and voila!!! No more big kites.
10 ultra 11/24 knots
9 wave 16/28 knots
7 wave 20/35 knots
I don t think there is a fast 12 mts wave kite