Over here in Germany -90% use the Orthovox location system. I got one myself and I'm very satisfied with it. It's easy to use, exact and very robust.
It doesn't say how depp or which direction, it only has a beep and lights.
I like the B&F, too, though the Orthovox is much cheaper.
I friend of mine just got the new B&F and we will compare them directly!
Cheers