I own and use 6 different Tesoros. My hunting buddy and I primarily hunt old homesteads in highly mineralized ground. The 4 machines we take with us are the Deus, Vaquero, Tejon, and micromax Eldorado. The Deus is always the first to come out but after a few hours of all the chatter in these square nail/flakes of tin sites I need a break and want to quiet it down the first to come out is the Vaquero. The Vaquero is the best all around Tesoro IMO. It seems to handle highly mineralized ground and be just as deep as the Tejon.