Like spinnekop said I rode a synapse for a year and I was really surprised by the bike. Before the SYNAPSE I was on a SIX13 so there was a big difference in comfort between the two. The SYNAPSE was maybe a little less responsive than the SIX13, but nothing to write home about. This howevr can be expected as this bike has a completely different geometry, built for comfort. There is a couple of different SYNAPSE models available. I had the SYNAPSE 1. All carbon with SI cranks. Most of the SYNAPSE bikes sold in SA is SYNAPSE 3. They use normal cranks in the oversized BB and are slightly heavier than the 1. If you spend a lot of time in the saddle, this is the bike for you. My old bike with Campag record and EASTON Tempest 2 wheels is just over 7kg in weight.