Too late, I just bought an Azure Trophy. I was looking for the BRG one but none were available. I actually love my Trophy, for what I use it for it's perfect for me. The XX is certainly more modern though. In this case I'd take the XX or Kawasaki over a Hayabusa, depending on which one fit better. Performance wise I think it's pretty much a wash as all three run as fast as you want to go. I have heard of Hayabusa reliability issues and short tire life, check out powersportsnetwork.com owner reviews, you can get some good first hand info there.