hi, I run a deben mk 3 long range. i use it 2 days a week in the seasson, it is funny at first to operate but when you get your head around it its simple!!!
Also depends on what type of dog you run as the b&f is great for hard dogs that grab hold cos your supose to put it down and wait for your dog to settle to its quary then move it till the depth is at its lowst then dig!!
But i find if you run smaller dogs through big places it can be going around and around for half an hour before it catches up with its quary so the b&f is a bit obsalete but the mk 3 long range alows you to know