I have had the Cibola for abt 5 months. It is a very impressive detector. I f you get one, I can tell you how to calibrate it for your particular soil, and it will detect just as deep,, maybe deeper than the Vaquero and the Tejon , especially on Gold. The calibration procedure is fast, easy, and wont void your factory warranty. The Cibola operates at around 14.3 khz, and will detect a nickel (gold), farther away than it will detect a quarter,, (clad). Even with the sensitivity turned all the way down to 1, my Cibola still has me digging dimes, copper pennies, and quarters down in the 5 and 6 inch range in moderately dry , hard soil. I am going to get another detector, probably a compadre, so that I can just scan the surface for fresh droppings, or for competion hunts. My previous Tesoro detector,, The Sidewinder I had, before some rat stole it,, was a coin magnet,, and loved clad coins, it just didnt detect very deep. And sometimes thats how I like it. I have found plenty good things so far with my Cibola. Im still trying to learn the subtle differences in tone or loudness or "pop", that others swear they can hear to identlify what the target is,, but so far its been elusive. The TONE sounds EXACTLY the same to me, weather its a nickel, quarter, dime, penny, pulltab, pencil head, iron bar, gold ring, siver coins,, ect , ect, It ' pops' just as hard on a clad dime as it does a clad quarter in my ears. The only thing that sounds different is if a target is very deep, or the target is on he verge of being discriminated out. Then the sound will be kind of broken or faint without the definitive pop. I would love to blindfold someone who says they can tell what type of clad coin, or sillver or gold is under thier coil, and watch them do it,, because I hve listened intently, and I have better than average hearing,, and it all sounds the same to me as far a tone goes,,, thanks for reading and welcome any replies ,,, Steve