Thank you for the information. I bought the X2 from Monte. He had a friend who was a dealer, and I traded him an older Bandido and paid the difference for it. It's been an easy machine to use and I've used it for all my finds. At the time the Tesoro dealers were recommending the Bandido II Umax, but the ground balancing scared me away. I've always wondered about the mineralized soil in Arizona and its effects on the performance of metal detectors. There are a lot of abandoned mines and mining camps close to where I live, and I'd like to look for relics and gold. The ground is most likely mineralized and there is a lot of trash in these locations, i.e. shell casings, cans, wire, nails, etc. I have the seven and nine inch coils for the Shadow X2. I probably need a smaller coil for the trashy areas and maybe a DD coil for the mineralization. I've heard that there is gold in southern Arizona, and I'd like to find some. That's why I was thinking about the Lobo ST. I read some reviews that the Tejon didn't handle bad ground very well. Regarding the Vaquero, AKmining.com sells them, and they are in the gold country of Alaska. I wish I had had a metal detector when I lived in Alaska, but I was just a kid and my family was into fishing. I think your idea of going up to Prescott is a good one. I should take my older detectors up there and ask them for a tune up. I'm still debating whether to keep the Tejon or El Dorado. Thanks again for the reply. Have a good day.