Since my safe is in my basement, water was a huge issue for me. I bought a Stack-On Total Defense series GSXW-836. Seemed to have alot if the safety features needed. Safe sits on 4x6 treated timbers lagged to the concrete floor, and the safe is lagged to the timbers. This also sits in a corner of the room so it is against a wall on the back and hinge sides. Makes it harder to tip the safe over to cut thru the back panel. My friend told me that heat goes up ( more of an issue with 2nd or 3rd floors ) and water comes down ( issue in a basement ). This safe claims to have a 72 hour water resistance in 2 feet of standing water, and 1400 degree ETL rating of 30 minutes, and has lots of locking bolts. I use a dry-rod and have had no issues with rust. Also have a small document safe that fits on a shelf. Actually a nice safe for the money, and have not had any issues. Yet.