I've always liked Rando's;if you're happy with yours I'd get another pair. If you're willing to spend the money,Schwalbe Marathon Supremes are some of the best tires out there. Grippy even in the rain,good ride,excellent puncture protection,light,and reflective sidewalls.
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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,Brompton S6L/S2E-X/M6L-X/S12 T Line