Best-rolling wheelset I've got is early 70s Campy Record hubs w/ H+Son rims. I'd be all over them if the price isn't insane, especially if they have the QR skewers (not pictured).
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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