I'm not advocating everyone should have or needs anything like my him, so if a 10k security system + run of the mill yapper buys you your peace of mind, then I can't really argue against it.
I don't think many people realise the difference between a trained dog and a "normal" dog in a security situation. I'd wager 99% of people who read this, who have what they consider a good guard dog, will dismiss anything I say because I don't know their dog, their dog is harder then nails, more protective, smarter than average etc, all the usual **** you get when blokes get competitive about their dogs.
Most guard dogs, certainly in a domestic enviroment, are easy to deal with. Nobody will agree with this and nobody wants to think their rotty might just be a bit of a pansy when really pushed or easily coerceable, or dominated by another dog. I doubt, thankfully, that many people here have ever seen their dog in a situation where its or its owners life is at stake so most base their presumptions of theirs dogs abilities on the strength of its bark or the length of its hackles when a stranger knocks.
If the dog is the tool, I don't want that tool to be lacking when it comes to be properly used. I said earlier that anything that barks and makes a show of it is great and more than adequate for what people want in a dog. Just personally, I have different requirements, I wouldn't want to depend on something I was unsure about, in this case the dependence is quite important.
I don't think I could sound any more paranoid if I tried.