My daily commuter has 26x2" tires. I had a 29er,commuted on it a few times,and didn't like having to spin those big wheels up in stop and go traffic.
In my experience,if you want to roll tires wider than 32mm,you're better off going with 26" wheels.
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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