Check out Sturdy safes. Liberty safes are either 11 or 12 gauge steel, very thin compared to the 7 gauge Sturdy. With the Sturdy you can even had another sheet of 7 gauge stainless steel inside it.
I had a Liberty until I found Sturdy, well worth the extra money. A lot heavier built.
I would pass on the digital lock as most lock failure are with the electronic lock. Stick with the dial-type and buy a small wall safe for a home defense weapon.
Think about how many guns you want to put in it (how many you own) then double it and that is what size you will need. Between rifles with scopes and future purchase, all your space will be used up really fast.