Well, first of all, as you already know, the locks come rated as bronze, silver or gold. Obviously gold rated ones are safer than the bronze rated ones. What lock to choose depends on the criminality index. If you are gonna leave your 3,000 dollar rig locked in times square maybe you need the gold rated one. If you don't like most of us, maybe a silver one will be enough.

I use a Onguard Pitbull and eventhough it has a few battle scars, local thiefs haven't been able to break it open.

Ricardo