I've been holding out before answering this poll because while I do love my San Marco Regals, I couldn't legitimately go 10/10 until I rode my first century. Did that Saturday and the saddle was great start-to-finish.
Sunday? Yeah, a little less so.
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A race bike in any era is a highly personal choice that at its "best" balances the requirements of fit, weight, handling, durability and cost tempered by the willingness to toss it and oneself down the pavement at considerable speed. ~Bandera