Most the time though, more benefits can be had elsewhere, for example rather than buy a new frame, get rid of old zipp 40mm V's and get some firecrests, or better lycra etc. GCN did a good little review/comparison thing
Zipp 40mm v and 58mm firecrest. Is the difference huge? They go mad for the benefit at yaw but is it real?
I wouldn't be sure which has the largest gain (vs an aero frame).
@noBlakes started
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Most the time though, more benefits can be had elsewhere, for example rather than buy a new frame, get rid of old zipp 40mm V's and get some firecrests, or better lycra etc. GCN did a good little review/comparison thing