I've got 2 of those srping loaded door safes, 1 is in my truck, 1 is at my BIL's (someone was stealing his meds), they are great but not quite. I have a stack on wall mounted safe in my bedroom, and during the day it is in the locked position, at night it is either 1 of the 2 other positions I keep it in, 1 unlocked and wide open (no kids in house, alarm set, and I have to be awake enough to get it out of the safe correctly in order to shoot it) and unlocked but closed (this is attained but entering combo and turning handle just enough to keep the pins from relocking) (this is used when my grand children are here).
My grandchildren know not to mess with my guns unless I hand them one, but I'm not going to take a chance so everything is either 1. locked up, 2 on me, or 3 so far out of reach they couldn't get it without a ladder, and then they have to figure out the safety and me kicking some butt since they are never alone more than a min or 2.
For me the noise was not the factor, if you break into my house you will never hear the door drop over the sirens. But the spring loaded safe was not liked by my wife because it sat on the night stand. With the wall mounted one at least it's out of her way.