I'm going to add the Cannondale Carbon Synapse 6 and Synapse 5 and the Trek Madone 3.1 to my shopping list. The Cannondale and the Giant match up very closely. The Trek, I suspect, will be a little less "plush", and is also about $200 more. That's not enough to make the decision, but it is a factor. I'm already feeling a little guilty about buying a new bike, but that's a topic for another thread.