Mercian Super Vigorelli Track Bike

id say i prefer my mercian to both of those frames, but those frames had their strengths and weaknesses as well. my pinarello fit my body almost perfectly but i was a dumbass and sold it for the sparkly njs paintjob. both my pinarello and presto ended up incurring or developing damage that cut their life short anyways.

as far as 631 tubing goes, it is stiffer than the columbus keirin tubing that was on the presto, but i would attribute most of that to the 631 having a larger diameter and not the alloy/treatment of the steel.