I'm getting ready to drive 400 miles to hunt a colonial site in Jersey....Checked my Vaquero ,in air, Grey Ghost phones,, threshold at the three o'clock position, sensitivity same position, and a dime as the air target. Got seven inches in air..Disc was at nickel...Went outside and same settings, but disc higher, soil moist, and got a Roosevelt dime at UNDER 4 inches...Does anyone have some honest comparison figures? Last Summer,I was pulling dimes at 6 inches measured. Batteries fine . connections tight...I have a feeling the over all consensus is going to be" SHIP IT"