I would definitely go with the most expensive safe that you can afford.
I eventually, after several years of looking, bought a Champion safe that is 50 cubic feet. I went with the fireproof package just for added protection. I'm finding that the 50 cubic feet is just right fort my needs.
Get a safe that has multiple bolts on all door edges, a good combination lock and buy a sweet golden rod type heater and silica gel to kep the humidity in check.
You cannot, repeat, cannot get a GOOD safe for a cheap price. It just can't be done! I paid about $1600 for mine. It weighs about 1200 lbs empty. Put a bunch of firearms, ammo etc, and there isn't a punk anywhere that will haul it off.
One nice thing about the fire rated safes is that the internal temperature will stay below the point where paper chars. That way your divorce papers will be safe! I keep birth certificates and all important papers in my safe.
One other thing when looking at fire packages. Not all safe makers do the fire tests the same way. You need multiple thermocouples reading temperatures at different spots in the safe, not just at the bottom. Ask for the temperature profile. If they don't have it for your review, take a walk.
I used to worry about break-ins when I was gone and would stash firearms in hiding places. Now I leave town for two weeks and never worry about my firearms and other valuables.
If you you don't have lot's of extra $$$ laying around for a good safe, don't go cheap. Take the time to save and go with a good safe. You will never regret it. Something like a Sentry might be a decent compromise, but you just can't beat one like a Champion, Liberty, Fort Knox, etc.
In my opinion, the Champion is as good as a Fort Knox and a lot less money.
Just my $0.02 from someone whos been there.
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