The Proto is not a bad board, but it is just not worth $550. There are so many boards out there for way less that are just as good or better.
Flow Era, Salomon Villain, Salomon Time Machine, K2 Happy Hour, Nitro Rook, Echelon Orion, Burton Parkitect, Rossi Retox, or a Signal Freedom Machine camber or flat.
Go ahead, drink that kool-aid.
FS: Forum Sauce 142 $200 plus shipping
FS: Flux SE30 $75 plus shipping