I'm looking to buy a new 2014 CAAD10 105. Do you guys think it's worth it to shell out an extra $600 for the Ultegra. The new Ultegra 6800 groupset is nice. Money isn't really an issue but saving an extra $600 would be nice. OR if i were to shell out that much, go for the new EVO 105 that is the same price as CAAD10 Ultegra? choices..choices..can't decide.