Few things to clear up here:
1. No, the TL rated safes generally ARE fire rated. Much higher than most gun safes in fact. Mine and the one I'm looking at are both rated to 1850deg. for 2 hours. Just make sure the one you get has the listing pasted on the door frame. Most TL's are plate steel with integrally poured steel nugget aggregate concrete.
2. The e lock code is not stored in the keypad, there's another circuit inside the door, but that doesn't mean you can't rip the fucker off and still hack it. In fact, were I gonna breech a safe, the ONLY time I'd fuck with the door at all is if it has one of those e locks. I've broken enough codes in the past on alarms, card access and keypad entry, and the technology isn't any different.
3. All safes generally have overbuilt doors. You are concerned about the walls and such, the stuff you DON'T see when looking. Everyone notices the door, the door, the door. Fuck the door. Reason the industry is moving to TL-30x6 (6 walls equal to the door) is because everyone has figured out that it's easy as shit to demo the side out, and hiding it in your closet ain't gonna work because the same tool I'd use to cut the wall off the safe is the same one I'd use to cut through you're front door, your closet wall, whatever (no, it's not a sawzall). After I disable your alarm and any cameras first.
4. You can still breech a TL, but it's damn hard and it ain't likely gonna happen in a residential setting.
5. "Pros" aren't movie James Bond types. They're former security techs and insiders, and they're all around you. Shit, you're talking to one now in fact. Only difference between a "pro" and an excellent security tech is their chosen line of work (which sometimes overlaps). So be careful who you let in your house, particularly your alarm tech!
Former security insider.
update:
http://www.amazon.com/7036-Original-Platinum-Vault-ULTL30x6/dp/B00HWCBEVI
Found locally, delivered and installed, for $6500. TL-30x6 rating, 70x36x26 interior. This is THE best deal I've found, bang for buck, even better than the Amsec. I've installed jewelry stores with much less that were UL rated installs.
One guy found one of these four years ago used for $4900 plus shipping, so new and warranted and installed for $6500 ain't too shabby. Expensive, but if you own even one rifle that costs more than the whole safe, then it's worth it in the end.