With that being Said thicker steel on the sides is a must to slow them down as much as possible. You know only have a few options on the market They would be the top of the line offerings from a couple of the above named safe MFG's. Graffunder. As far as customizing your order. Im not sure about the Graffunder but at that price they probably do. Sturdy Safes seem to be the most bang for your buck. And you can have pretty much what ever you want built into it Fort Knox is probably the best of the "Pretty" safes that are customizable inside and out. Then you have the warranty's of the companies to look at then the fire lining method, You have fire-board, Ceramic wool liners, and a concrete type fill. I have narrowed my choices down to 3 The Summits, Fort knox with upgraded steel or the Sturdy. Right now leaning toward the Sturdy.