Originally Posted by
a77impala
I have had bikes that beat me to death, other bikes with the same frame material that ride like silk. It's not the material but the design, imho.
For example not all aluminum is created equal. A CAAD10 due mostly to the alloy in the aluminum is what created the ride quality versus, say, any entry level aluminum frame. So it's a combination, but the alloy change made a big difference between the CAAD9 and 10 in vibration absorption.