My Garrett AT Pro air tests 11" on a quarter. My Makro Racer (original red model) air tests 14" on a quarter. They reduced the retail price to only $499. It's only single frequency, but on a You Tube video they tested several of the best single frequency detectors in Culpeper, VA, which is highly mineralized. On a bullet, many were getting weaker at 4" but the Makro Racer still loud. One took some of this highly mineraliized dirt home & the bullet was still strong signal at 6". Used, these detectors can be found for $325-$400. The weight is roughly identical to the AT Pro (about 3 lbs). It also uses 4 AA batteries.
Keith Southern did a video of the Makro Racer 2 on You Tube, showing it air testing 20" on a nickel. An air test should roughly equal what the detector could do in unmineralized dirt. My AT Pro correctly IDed a 7" deep dime on every pass. Moderately mineralized soil that was totally dried out. Lots of detectors can beep deep, but will give poor ID beyond 4 or 5 inches.
White's has the MX Sport with problems now corrected, about $749. White's showed video 12.5" air test on a quarter, and was much quieter than MX5 or MXT. It also can be submerged in shallow water. The weight I think is something like 4.25 pounds, including batteries. Best wishes, George (MN)
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