i spin a lot of s&g's, both mechanical and electronic.
if you want a pretty safe and like the look of the electronic lock then that's pretty much the only reason to get one.
Not sure how they incorporate the electronic locks on the safes you're looking at. If it requires a battery to work, then it's kinda stupid. The ones I come across generate their own power when you spin them. But considering the lock's purpose, a mechanical lock is much more durable and reliable. All you'd have to do is smash the lcd readout of an electronic lock, or smash the keypad, or if there's a fire and it cooks the circuit board, it's done. A traditional mechanical s&g lock will take anything and everything and you really can't deface it. For those reasons I'd go with a traditional mechanical lock, if you want the best protection and best reliability durability. And they usually cost less.