I have a few favorites in the "tang" group.... some include....
Acanthurus Bariene, Acanthurus Dussumieri, Acanthurus Fowleri, Acanthurus Gahhm, Acanthurus Leucocheilus, Acanthurus Nigricauda, Naso Brevirostris, NasoVlamingi.... the list goes on, I like tangs alot, good thing I have some very large tanks on the way....