I recently bought a White's Surfmaster PI Pro and am enjoying it's depth at the beach. I'm looking for a "land machine" to use when I'm away from the water as well. The places I plan to detect are absolutely full of nails and beer caps/pull tabs. It just isn't the place for the PI unit. I am willing to dig it all at the beach, but not at parks and such. I've been leaning towards the M6, but am not concerned about brand loyalty as much as being able to actually tell what is in the ground. I would really appreciate any advice that you have....thanks.