I have had the Alpha V2 in 10 and 12mtr, used to own the v1 which was very good on my foil board but a let down on a Ttip, little boost ability and flappy in strong winds needed on a ttip
the v2 is way less flappy, noticeably more robust, and yes its a tad more heavy, but its much better on a Ttip it actually will boost now, not high but ok, the 10mtr is fun on a foil, big fun! the settings for wave or freestyle can, and do make a huge difference to the feel from the bar, I hate heavy feeling kites, and quickly changed the setting to freestyle and it was a joy for me to use, light and responsive, hunting the front of the window felt much better on the foil.
then I got a chance to compare my 10mtr back to back with the Core nexus 2 - 9mtr,
I was looking for the best of both worlds(foil and Ttip) from a kite
I decided the nexus 2 was a better choice for me, so I then exchanged both Alphas v2s for 2 core nexus v2 kites of 9mtr and 11mtr, it was an easy choice for me as I also use a chrono v4 11mtr as my ultimate light wind kite for my foil board, if I did not have the chrono then the 12 alpha v2 would have not been swapped for the nexus 11mtr, the boosting ability and turning speed of the nexus kites was the main reason for the nexus preference.