I wouldn't go as far as to hate on wallisch, he is unreal on rails.
But B-dog definitely knows where rails skiing is going and has the most progressive tricks. Surface Swaps, 180s on rails skinny-er than the width of your skis, crooks, bluntslides, and presses(yes presses have been around, but they're making a comeback), are the new shit in rail skiing; and phil was the first to do most of those tricks.
Phil Casabon = Best/Most Progressive rail game.