I liked my stock T&C's until flat number 5. Next spring I have set of 1.6" Conti Sport Contacts I'm going to mount. Light,smooth,higher pressure,puncture protection. I got them because of the many good reviews they've gotten here. I've also run 1.5" WTB Slickasauruses,which are fast but lack puncture protection,and Specialized Nimbus Flak Jackets in 1.5" which were decent all around but a touch heavy.
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C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Dahon Speed Pro TT,Brompton S6L/S2E-X