Well, I would argue that the Audigy2 is a BS update to the original Audigy. The A2 is a completely different animal in my opinion and is head and shoulders above what the A1 was. Looking at the A2 ZS though, I would say that it's not a product A2 owners should bother with unless they're looking for DAT support. I think it's just an interim product until Audigy3 comes out.