Re: Only cracking I have done is
"Then turned the pliers on the loops on the case the locks went through, it was lick putting a hot knife through butter."
Yes, but also very obvious to a casual observer that it's been fiddled with.
If you pop a padlock you can close it again. If you break it, you can remove it. We've had both instances occur.
There are _much_ harder locks to pick than standard pin or barrel jobbies but there's no point going harder than what holds the lock down.