octalink is way stiffer and is going to transfer more power than any squaretaper interface can ever dream of. hands down. outboard bearing two piece cranks seem to be superior to octalink. the new d-a is ugly, but works best, and weighs the least. except maybe the newer carbon fsa stuff.

but all that sums up to phil/deep v really though.

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i ride campy on the track though. boing!