I do agree, but it's non-trivial to get a good one, and from the candidate side it's very hard to know if the headhunter is good before investing a bunch of tim

I do agree, but it's non-trivial to get a good one, and from the candidate side it's very hard to know if the headhunter is good before investing a bunch of time with them (I am OK talking on the phone so know a lot of recruiters).