Sorry, I used the K87 2007 and now have a k79 2008. Both are VERY good on a wave, especialy of you keep some speed throught the turns. Kombats actually never got to honors for their wave performance in tests. I think bacause what is tested when it comes to waves with these types of boards is kind of slow back foot riding. The Kombats, with their Acid rockers and bottoms, are more high performance wave riding style, and thrive when you really push them. Then they lock into a turn in a fantastic way.
As for control in chop, I tought my K87 was excellent at it and the K79 is even better. The K79 is a very, very fun ride in powered up 4.0 choppy lake sailing.