I have a 2012 Synapse Rival, have test ridden a 4series domane, and have test ridden the Roubaix as well. Roubaix was a 2011 model I think, it was CUSHY!!! very nice bike, I preferred the Synapse though, less cushy but still softer than an Evo or Tarmac or Madone, it was a good fit for my prefences. I can't comment on the new Synapse though, but everything I've read says its much nicer than mine.