Very gusty conditions but interesting comparing Point7 AC1 4 cam 8 batten 8.6 2014 vs ACK 3 cam 7 batten 8.5 2015. Overall IMHO the AC1 is def larger and heavier but super stable with xlnt bottom end and good rotation. The ACK just as good top end, less bottom end but significantly less swing weight (sticky on cam 6) but xlnt drive thru gybe and handles a smaller fin in stronger breeze. Verdict: AC1 2015/16 may be the go considering weight reduction.