Some very interesting info on youtube concerning UL ratings of safe locks. One 30 minute speech I listened to was from a lock manipulation (safe cracking) convention. Takeaway for general buying public was: bigger and heavier is better. The slower your cops are the heavier your safe needs to be. General consensus is that 750# is a good starting point. Also that a good safe is made even better by a good burglar alarm system for the premises, the key being that if a burglar sets the alarm off but knows he can open your safe in less than the response time of the cops, you're done. Any safe can be defeated, how long it takes can be the most important thing.
Only reason I'd ever buy a lightweight, cheap "safe" would be to act as a decoy.
SRH
