I can't find a definitive answer on this, but I think I know the answer. I have both GH:WT and RB2. I just have two guitars and never got drum kits. If I only want to buy one drum kit, I need the GH:WT kit, right? And this is not out yet, yes? Sorry if this is kind of off-topic, but if I can use the RB2 drums for both Ithink I'd actually prefer it - I just don't think that's the case.