It was cold but I wanted to get a feel for my new machine. I only dug solid repeatable signals and came away with a small handful of coins and a house key that was at least 2" deeper than my Garrett pin pointer, I even gave up on a feel targets. This thing can go deep. Looking forward to learning the machine. For additional reading and tips is there an opinion as to which book is better, Andy Sabisch or Clive James Clynick?