One thing I like about OT's stack on is that it DOESN'T LOOK LIKE A GUNSAFE! It just looks like a cabinet. Granted, if someone is coming into your house and prepared to tackle a locked cabinet or safe, as opposed to just stealing your TV, they probably know exactly what you're looking for (hence I don't have my safe in a part of the house that any service professional would ever use, nor do I give them access to that area when I do have service calls for plumbers, furnace, electricians, etc). But if a guy that came in after my TV DOES see a safe/cabinet, there are pry bars in my own garage, maybe they take a crack at it.
Not grabbing attention is important to me also.