Only because I heard they were the best, and the longest lasting. But I'm not sure any more, as I think the bulged sideplates has more benefit for my needs.
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70's Nuovo Record Jeunet Franche Compte, '88 105 Trek 1200, '85 Victory Bianchi Vittoria, '89 Exage Bianchi Strada LX, & '11 Shimano Masi Partenza