If that's the way you're thinking then, yes, a BC might suit you very well. There's nothing better than a herding dog for working with you and paying attention to every word, every hand gesture and every look - Spike even has one or two commands that consist of nothing but an eye-flick. After a while it starts to feel like telepathy.

The downside to that is that they don't switch off easily and when they want to be bad they'll be spectacularly, creatively bad in ways you never imagined a dog would bother to be. They're complex dogs and they're not restful or soothing to be around. But they're never, ever, ever boring...