Ask yourself what kind of riding you do most. shorter spirited rides? Get the supersix. all day weekend type rides, get the synapse. I got something in between but If I were to do it over again I'd get a racy geo bike. I find myself doing weeknight rides which dont allow for more than 40miles of distance so. I did a total of 2 metric centuries this year. much less than I anticipated since its hard to simple take 3-4 hours out of my day and just cycle