I rode the Addict R1 and loved it, but out of my price range. $3300 for the frame-set alone. Picked up a 2009 CR1 and am tremendously impressed.
I'm actually shocked how much the Scott seat weighs. It felt heavy but I didn't realize it was that much. I think I'm below 17lbs now with the saddle swap:
PS: The addict does have a replaceable derailleur hanger.