Very nice bike! I have never ridden anything but lugged steel bikes, I guess I am afraid I will like the extra speed. I have been told that the energy is more directed to the speed of the bike. I know that most of the carbon bikes I see on the road go past me pretty easily , which could be more than just the bike. But , I do believe the newer bikes are most probably more efficient and quicker. I have no way of knowing because , as I say , I never ridden one. Joe joesvintageroadbikes.wordpress