I was given a pair of scimitars and I haven't ridden the jeronimos, but I'd probably recommend them over the rossis.  the scimitars are sweet, but they're just kinda damp, not that snappy or responsive, and the fact that they have no camber doesn't help for skiing park.
They're great in choppy snow, but they're just not that great on hardpack, they don't carve all that well cause there's no camber under foot, and the flex/camber is too soft especially when you're going real fast or hitting big jumps where you need a good stiff nose/tail if you land a little off.