I keep coming back to this one, the '02 Mercian Vincitore custom road fixed-gear. After experimenting with different tires and a White Industries Dos Eno freewheel, I set it back up with 28 mm Paselas, 16/18T fixed cogs and the stained and scarred SKS fenders I first mounted on it in 2003 and started riding it again. No matter what else I ride, when I'm in the saddle of this bike I'm home.