I will be commuting from Northern VA into DC and am wondering if an OnGuard PitBull U-lock and cable is sufficient to secure my bike (recognizing no lock guarantees security), or whether I should order one of the strongest Kryptonite locks or chains. The U-lock I found at the local REI is 13mm thick and has the 4-way locking mechanism. It comes with a 10mm cable as well.

I can park my bike either just inside the parking garage in my building, or on the bike racks outside a large office building across the street. The racks inside the garage are old and pretty banged up; one looks stronger than the other, and there seem to be too many bikes for the space (not including me). The good thing is the gate is closed about half the day and there is a guard at each gate. Alternatively, I can lock up outside. There are many bikes locked across the street, the racks are new, and there is a guard relatively close to the racks pretty much all day. I also intend to use the bike and lock for short errands, grocery shopping, and coffee stops.

My bike is an '08 Jamis Coda. At home, the bike will be stored in a 'bike room' in the building where I live.

Thanks!