I vote for trimmed, this way it looks groomed, I can't stand to suck a cock and get a mouth full of sweaty hair its just so NASTY, but then on the other end if its totally shaved sometimes depending on the guy it can seem as though they haven't yet hit puberty, though shaved on some guys can defiantly be HOT.
Personally I try to keep trimmed, since it looks weird if I shave my pubes but don't shave my legs, so trimmed just sorta makes them match, and its easier to maintain and if I miss a few its ok. If I was to keep shaved all the time I would defiantly need a shaving helper to be sure I got everywhere.