For what it's worth - regarding lock picks.

Round locks are very hard to pick. Also, I don't think that you should be overly concerned about people picking a lock. Very few people have learned how to do this and fewer have the tools, especially for round locks. You can't pick a round lock with the tools you use to pick a typical lock, unless the lock is defective, as the kryponite locks that were recently recalled were.

I was talking to a locksmith in an urban area who told me that he has never seen a lock picked by a thief. He said that it's much quicker to cut or to smash and grab. He also laughed at the idea that most of the junkies who steal things would have the patience to pick a lock.