The beauty of the Evo is that it kicks ass on clean terrain for freeriding, so even if your mostly riding park you can still ride it anywhere you want. The Proto may even be a better choice for you, since it's a little stiffer, and has more pop I've heard (prob better for jumps). I ride trees a lot, and love my Evo for it's extreme quickness and responsiveness on turns, plus the softer fun factor. I think it comes down to if you hit jumps more then jibs, get the proto, if you hit jibs more then jumps, get the Evo.
PowderHound and TreeNinja