If you haven't played A, and Final for GBA I highly recommend them. They are quite a bit like S, and D, and once you get used to the audience, and Management of Ring modes, its hard to go back to SSS. Not to mention the edit parts. You can make Bruce Lee, and Batman, and crazy stuff like that. Also, a lot has happened in wrestling in the 10 years since SSS was released, so there are a lot of new parts for newer wrestlers/costumes. Of course in American wrestling stuff has basically just gone totally downhill (everyone looks like The Rock now) but you have POS Hearts, four versions of Tiger Mask, etc.
Returns is pretty rad also. Much much better than Z was. Returns has, bay far, the most powerful CaW ever. If that doesn't turn you on, there are edit parts for Hard Gay in Firepro Returns.