Most has already been said, but I'd like to add two things: if you are a true relic hunter (I hunt CW relics exclusively) The switchable discrimination is very useful in trashy relic sites. For example, after owning the Tejon for a few months, I realized that I could get MUCH deeper on ANY kind of metal in all-metal-mode. maybe that's a no-brainer . . . but I didn't know!! I was finding relics right along, but I wasn't finding DEEP relics (tejon) in disc mode. Then one day I was in a trench and switched to all metal for the heck of it. I started hearing faint signals. I switched to the lowest disc mode but got NOTHING. Ended up digging 3 .69 cal 3-ringers about a foot apart at 14 inches. Keep in mind this was TRENCH dirt which is looser and in Virginia where I was, it was sandy. My friend walked over with his nautilus, and could hear NOTHING. Another day, my friend with an AT Pro tried hearing the faint signal (.58 cal 3 ringer deep) and could get nothing. The point is, I can hunt in all metal, but if I get into a bunch of nails or barbed wire, a one finger toggle puts me in disc mode 2, and I can either ignore or decide to dig based on the sound. IMHO the dual discrimination is very helpful in trashy sites. the other point (nobody has mentioned) is that a common complaint of the Tejon is that it "loves iron too much." Now I AGREE with that - if you don't want to dig ANY iron! But a true relic hunter is looking for rifle bands, locks, hammers, butt plates, trigger guards, shell fragments (Schrapnel), grape shot, rifle tools . . . well, you get the idea. They're all iron. So a camp or battle site demands that you dig everything. Iron and all. If that's your style, the Tejon is a wonderful machine. I've never hunted a vaquero though, so I'm unqualified to compare. I just know I wouldn't trade my Tejon for TWO of any other machine. It IS however a great idea to find out what guys have to say who hunt in the kind of soil you are hunting in. Our soil here is good. So again, I can't comment on the Tejon performance in highly mineralized soil. BTW: I hunt with my machine "right out of the box." No mods or fancy coils. Just the one it came with. So if you have a good ear and go slow, a site ain't hunted out, until a tejon has hunted it!