I wanted a river runner myself and was looking at the EZ (which I've used frequently but never owned), moving from a Riot Dom 44. I'm 5'11", 170 lbs and am the worst playboater on this forum. My buddy Craw talked me into the Fun without a demo and I was about to kick his ass for it but he told me to give it a few more tries.
I still think the boat is a little squirty for a "river runner", at least the rivers I'm interested in. But I am so stoked on the boat now. I've taken it down Gore 3 or 4 times now and other than a couple squirts in Gore rapid the thing is great. Last Friday I took it down the Upper Yough and had the best run on that river yet! I took it down Gauley Saturday and Sunday and felt solid and comfortable with its river running capabilities even as I was throwing up on my skirt through most named rapids from a wicked hangover. If I lost about 10 lbs I think the squirty issue would go away.
If I am having a low energy day, I might opt for the creek boat on those rivers but I like having the option of throwing myself into a hole and trying some whirlydoos every once in a while. The boat is obviously a respectable playboat since EJ wins or places in every comp in that boat.
If you want to borrow mine, let me know, Craw is also bringing back an Allstar from Gauley but that thing looks like quite a handfull.
I've met EJ and his family and they are simply great people, yet another reason to support the company.