The first things that we would need to know about before we send you off after our personal fav's would be (1)Where do you ride?(2)How will you be riding?(3)Height/Weight (no, I don't need a date.
The PR is going to be an easy favorite. The mags love it, and it is a good solid performer. The Pistol is going to get a lot of hype, which it might deserve. The vertical sidewalls have my attention on that one. It might just give the PR some healthy contention. The Stomp will be a nice all-mtn stick, but is less of a park ski due to its stiffness and weight (IMHO).Line's seem to be a love or hate 'em thing, so try a pair out first. I haven't skied the Rossi's, but I have heard about some durability issues. Another to consider is the Volkl V Pro. I haven't been on a pair yet, but I have heard very solid comments about versatility and durability.
In the end, get a fat twin only if you are going to use it as a twin. Otherwise, your choices for fats are much broader. If you indeed intend to land fakie and ride into booters with your backside leading the way, then I salute you as a brother of new-school.