I did a short demo in the Fun-Runner 60 the other day. I weigh 165 and paddle up to class 4+. My other river boat is an Eskimo Diablo. I am looking for something I can still paddle big water in, but surf and spin a bit more than the Diablo. I just paddled the Fun-runner back and forth across some class 2 waves and in and out of eddies and surfed a little, so this is in no way a comprehensive impression. It was nice and stable side-to-side, and rolled like a dream. One thing I noticed is a tendency for the front to sink a bit when I lean forward and paddle hard, kind of like a play boat, although not as much. This slows it down on flat water and makes it very easy to pearl or ender on a wave. I understand that the sinkey front end was intended to give this boat a play-ish character. In that case they did a good job. It is not what I am looking for, however, so I think I will wait for the Zen.