Originally Posted by
rothenfield1
I would respectfully disagree with you about frame flex. If I could get my younger legs back and took going fast seriously, I would want the stiffest bike I could stand. The energy lost through a flexing frame may not be very noticeable, but it is still real. I like steel frames because comfort is more important to me these days. But, I still ride my aluminum frame with carbon fork more than any other bike. I've never ridden a carbon frame, so I can't comment on them.
I agree with you, I just don't think the difference is significant enough for most people (even racers) to wring their hands over. Ultimately the stronger rider will prevail but at higher levels when competition is more... well... competitive every advantage counts.