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@lemonade
Well I have no personal experience of either 'Reynolds 631 butted' or 'Maxwall custom double-butted chromoly tubing, with an all-new externally butted top tube', so I guess not. Reasonable to assume that 631 is meant to be 'one grade above' perhaps, but what difference is that actually going to make? Perhaps the double butting and external butting makes up for the difference? Or perhaps tyre choice will make more difference to comfort, and component choice more difference to weight and stiffness? Who knows.
double butted lol