Let's put it this way. I was out with a buddy detecting and I brought my GM 1000 to a spot his GPZ has hit numerous times. I even have my own GPZ. But I only brought the GM1000. Anyways, I found two pieces of gold in this patch area that was only about 10ft length of wash. (so it had DEFINITELY been hit many times) And the funny thing is, the pieces I found with it were smaller than the blow tube gold found earlier in the night. I had to scratch my head on that one. And that was with the larger coil. It gets gold plenty small. Not the smallest, but then it's not worth trying to get it in the scoop when it gets too small.
No machine gets it all.