Doozis, you say "Being able to talk face to face with an expert and
personally holding lots of different detectors would give you a
great advantage" You're right. Some people ask these questions out of sincerity, even though it's like the old Ford vs Chevy question. They could scroll back over thousands of pages of posts, and see that the question comes up every week. Also as they scroll, trends start to appear as to which machines are finding the stuff. Ie.: go to brand/machine specific forums, and see who's finding the old coins. (Of course, even a cheapie machine, if you put him in a great spot, he's bound to find something)
Here in CA and Oregon, prior to about 6 or 7 years ago, the average guy in any club you visited, was swinging a Whites, Garrett, or Fisher. But now, 80% (esp. of the hardcore hunters) are swinging Minelabs. This is true even of the nugget hunters, even the Whites poster boys (in their ads) are swinging Minelabs now. That certainly says something. A lot of us were dragged "kicking and screaming", but couldn't deny the results we were seeing. Like, someone pointing out a spot in the turf and saying "try here, I hear deep silver". And try as I may, I couldn't honestly say I'd have heard it.