In reply to purplemonkeyelephant:
> Trust me, having a dog that has human aggression potential is not worth the stress.
Already had one for 8 years (our previous GSD, which we rescued from starving at around 9 months). Wasn't an issue - had a police dog handler help in the training which coupled with supervising the dog when 'in company' (which was fairly infrequent) never made it a problem.
> Unless you're an expert in dog training you'll just create a loose cannon more likely to attack the postman than protect your TV.
We don't have a postman. We did once (somewhat mind-boggling given where we live) have Jehovah's witnesses. They didn't stay long.....
> Get some visible and decent CCTV...
Nah - not bothered about protection of possessions. Don't even bother to lock the cars and half the time leave house keys in outside of the door. The issue was more of a personal security (mostly for my wife when I'm away).
Thanks for the advice though.