Fins.
The beauty of any board, but especially the FSW category is that the boards behave very differently depending on which fin you are using.
I think, and correct me if wrong, but the JP FreeStyleWave has a relatively good top end. Certainly the charts hint at that:
http://www.jp-australia.com/2009/index.php?id=52I hope so, cause I just got a nice little slalom fin for mine for flatwater.
I don't think any of the boards you have mentioned Kan are bad, or even average. You'd be happy with any of them, although the RRD, again I think, is more of a turny, wave happy board.
From
Boards - March '09
(^ that's 1249 for the price)
even more...