Settie is random.
I like anything that has bunny ears attach to it or bunny headbands.
Bunny (Maid) Ears
Summer B.Maid Hairband/Ears
Black Bunny Ears (though in-game placement is weird.)
Great for non-bunny classes... At least for me. X_X
My favorite "cool" hat has to be Shara's Hat, Captain's Hat, and Kooh Hat.
I also adore the Bunny Smasher + Blocker, Aeritis Cape and the La Vida Gacha set. (Girly pirates rawk!)
Ugliest? Active Healm. Well it's a bit to manly for me, so yea.