I have had more than one Marinoni Special at a time, but I am down to one strada and one pista. I try to have one of each when it comes to bike so no duplicate bikes that would serve the same purpose with one exception... One Nuovo record bike one super... they serve the same purpose but it is the only area where I accept duplication.
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear