Cutting & drilling locks

I cut and drilled one of our storage locks today. We use a special type of lock on our units (several different kinds, actually) and they are much more difficult to cut than a padlock or disc style lock. I've cut the other locks off before, and they aren't much work at all. When you hear of storage units that have been broken into, it's usually one of those. So even though our locks are expensive (to us, we don't charge the customer), we also don't have a theft problem. What is a problem, though, is the cost involved if we need to get a lock off and we don't have the keys. In the past we usually have had to call a locksmith to come and remove the lock. That runs anywhere from $50-$60. So this should save us a little money.