Still waiting for someone to come out with sequential shifts so you just press up or down and the computer decides which (or both) derailleur to shift. Yeah, I'm lazy like that.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"