Sure. Just write a bigger check. A T15 or T30 rated safe will be a lot more money, unless you find a good deal on a used one. And all the RSCs (residential security containers), including the one I have, are more vulnerable than the Zanotti.
Any safe can be breached, given enough time and the right tools. My safe is only to prevent smash and grab. It's my alarm system that's the real deterrent by severely limiting the time available.