Join Date: Jun 2005
Bikes: 1990 Trek 1500; 2006 Gary Fisher Marlin; 2011 Cannondale Synapse Alloy 105; 2012 Catrike Trail
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I can't speak to the Madone, but the biggest difference in frame design between the CAAD10 and Synapse will be in the latter's slightly more relaxed geometry, particularly the taller head tube, which doesn't require as much drop from the saddle to the bars. There are also some differences in the rear triangle that are purported to provide more vertical compliance and therefore a slightly more comfy ride with the Synapse. When I was in the market last summer ('11), I didn't try any of the CAAD line, because I knew I was going to need to keep my bars and saddle closer to the same height. I tested a Raleigh, a couple of Felts, a Bianchi and a couple of Treks. For me, it ended up being between one of the Felts and the Synapse Alloy 5, and I picked the Synapse. I just loved the way it rode, and I felt better about the shop in question, too.