I'm at a point where I need to make some decisions about the components for the Indy Fab Crown Jewel Ti that is currently being built for me. I've only ridden Shimano (Ultegra & Dura Ace) for the last 20 years. The LBS through which I placed the order is encouraging me to consider top end components from any of the three... Campy, SRAM or Shimano. I'm not trying to start a debate here on which is the "best". All three must have exceedingly good components or pro teams wouldn't be using them. Rather, I'm interested in hearing from those who may have switched from Dura Ace to SRAM and/or Campy. What is your experience? Was there much adjustment? What are the pros and cons. Any regret, and if so why? While I've been happy with Dura Ace it seems that now is a good time to consider other options if indeed they offer an advantage with which I'm not familiar.