I had a turbo for a little while and found that any of the "edgyness" was caused by how the stern was cut down to be able to initiate easily. So, keep that in mind when you look at other boats.
The Fish IS a good boat, but it does have just a little bit of twitch to it. I can feel the part, just behind the seat that drives the boat into carves so fast, and accelerates the boat down the wave. I, personally, like it because it's controllable (being so close to the seat and not way out on the tip). But, if you are not happy with the Turbo, then the you might not like the Fish either. The Stinger (if you are to stay thinking about DragoRossi designs) would be a better boat for you to consider. Faster than most spuds (and def. faster than the Visons) but not as fast as a Turbo or a Fish on a wave. But, that "spud" feel makes it feel faster paddling downstream because the bow just has a tendency to pop up over stuff, so the ride is pretty dry.
don't get me wrong. I like the Fish alot. I just think that the STINGER
sounds more like what you are looking for.
I'll save my opinion on other boats so this doesn't get too long.