I think all of those choices are reasonable. Remember, you are not trying to prevent Oceans Eleven from getting into your safe.
You are trying to keep your kids, grandkids, nephews, neices, neighbor’s kids, the plumber, your roommate, your roommate’s friends who shouldnt have access out of your firearms. For most of them, if its not interesting looking (aka blends in to your decor) they wont notice it or mess with it. There is a very narrow age range in children where they are capable of figuring out how a keycode works and are patient enough to sit there and try different combinations systematically, so that may or may not figure in your process.
Criminals are generally not going to spend a bunch of time in your home. Usually they are in/out in 10 minutes or less with whatever they can carry. Unless you’ve been “marked” as a target with a safe and firearms they wont be bringing in saws, bolt-cutters. They may try and smash it open (throw on ground, hit with something else heavy), or they may have brought a pry tool/crow bar (those are easy to hide/carry). They may try and just take the safe though if its not bolted down and it doesnt prevent them from lugging out other goods.
All of the ones with keys, are going to be susceptible to a lock picker who knows what they’re doing.
All of the ones with fobs, are susceptible to the burglar being better at knowing where you hide things than you are at hiding them (if they aren’t on your person).
All of the simplex locks (Fort Knox in your list), are susceptible to someone who can systematically go through all of the possible combinations (a little over 1000 combinations, roughly 15 mins, because non-electronic there is no lockout period after X invalid tries).
The Vaultek (I have one) & Fort Knox (built like a tank) I am pretty confident in their ability to resist prying. You can probably look at/google the Gunbox and Rapidsafe to see if they are pry resistant, I am guessing they are.
All safes have weaknesses, its best to consider just the most likely scenarios. Don’t let people have unfettered access to your box (security through obscurity helps here). Bolt or tie down the safe to something secure. Be mindful of where you keep fobs. All of the ones you listed will likely keep out unwanted users in any reasonably likely scenario. So that means… buy whichever one your wife likes the look of the best