I appreciate all the replies! I think you all have helped me knock the Champion off my list. They seem like a nice safe, but their wall thickness and bolt size have turned me away.
70x40x30 is the size I'm looking at. I'm not sure I can afford (or fit) anything larger.
Would a safe with bolts on all 4 sides be worth an extra thousand than one with only 3? Does American Security or Fort Knox have the same ani-pry system as some of the Liberty safes?
Is there anything else I should be looking at to help with my decision?