Well Gnoll I don't agree, the AMSEC BF Series has a 90 minute fire rating at 2300 degrees, the Sportsman Safe webpage won't even tell you how long the safe is fireproof for, and in addition they won't tell you just how thick the metal is they build their safe out of.
As far as Cannon goes, their safe might stand up to an even test of the cheapest safe AMSEC builds. AMSEC offers three different strength Gun Safes lines, Not three different safes.
I bought the AMSEC BF Series safes twice because to get a stronger safe I would have had to pay four times as much and that safe (also made by AMSEC part #7236) weighs 4,000 pounds. As a Locksmith/ Gun Dealer part of my job is to drill open& repair safes. I have drilled many safes including Fort Knox, Cannon and AMSEC. I bought the best because I have a real problem with thieves and I just wanted to buy the best safe out there one time!
I can also understand if you aren't gonna put $100,000 worth of guns in yours, hey if you want a cheaper safe, well you've seen those. If you wanna save money heck man, just take a trip over to COSTCO, they have a decent safe for under a grand.