Tough one.
Out of those 3 ride types, the coaster that features highest on my favourites list is Tatsu, so technically I should vote for flyers but... somehow that doesn't feel right. Air and the Supermen have seen to that.
Divers then? Hmm.. no, that doesn't feel right either. As good as they are to begin with, once you get used to 'em...
So, purely by default, it's gotta be wingers. Although the two I've ridden are fairly modest (Swarm & Flug), I do feel that, as an overall concept, the wing-rider offers the more enjoyable coaster experience.