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Frame swapped over to a 2012 Supersix Ultegra, more thanks to the LBS (Sunset in Cardiff), than Cannondale TBH.
C'dale were not the most helpful, trying to palm me off with 105 colour frames, not matching my OEM components ("what you want - blood?" - "No just a like for like swap!"). Sunset told them where to get off, so it's all sorted now.
Swift 50miler yesterday as a shakedown, and if anything the bike feels more buttery than the 2011 model. Fantastic piece of kit.