I live in Chicago so a good lock is mandatory. I use the OnGuard Bulldog U-Lock to secure my bike frame and rear wheel along with a Kryptonite chain and lock (not the monster chain, the smaller version) to lock down my front wheels. So far the lock has survived two known attempts to break it. The perps beat the hell out of the housing, but the lock held.


Current: 2005 Jamis Ventura Elite, 1993 Solid fork Trek 930/4130/flat bars/upgraded saddle - my fav between bikes and back-up bike, 1970s 3 sp Schwinn with fenders and rear rack - errand and wet weather bike

Recent past: 2008 KHS Urban-X - really nice commuter bike (fenders and rear rack) that survived several attempts to steal it when left overnight in downtown Chicago.

Current short list for Jamis replacement: Bianchi Volpe, Surly Pacer, Masi Vincere or Masi CX