I like triggers, such intelligent fish and good looking too.
I've got a Sohal tang that is really growing on me as well, I like the way they move. I cant say it seems smart like the triggers, but it's pretty. Kind of the cheerleader of the fish world, whereas my triggers are the QB.
Somewhere in there I would throw angels too, I've only ever had one, a Emperor angel, but I really liked it. I've been thinking about putting a queen angel into my mix right now, but with some already established triggers I think that might be a bad idea.