I won’t buy a safe that depends on batteries or keys to open if it is for possible fast access. Even new batteries leak (9 volt less than AA or AAA), and Murphy’s other name is Battery.

My large safes, which are not fast access, are good old fashioned dial combos.

My quick access safes all have the five button mechanical Simplex locks, no matter who made the box. Fort Knox is in my home town, and Liberty Safe is a few towns south. I am less concerned with the box maker and more concerned with the lock maker.

My quick access handgun safes are easy and quick to use in the dark and have never surprised me by not opening. The personalized combination is sufficiently complex to obstruct unauthorized folks, yet easy to share with any one who is approved.

Keys get lost, or mixed with others and confused, or they are FOUND by unauthorized persons. Not the best security IMO.

Be sure to bolt the safe to something immovable, or get a stainless steel plastic coated wire that terminates inside the safe to anchor it to something so it cannot walk away for later smashing access.