Hey, Mike, I read the responses on this and your hearing from some of the "best", (me not included), but I do have a bit of experience on the Quatro, as well. I just wanted to throw my "two cents" in here, and say I swing an inch or two above the ground, but like Golden says, it depends on the terain, the grass, etc, but she's right, you'd need to compinsate that inch or two in your depth reading and also the depth reading is for a coin size object, not a railroad spike, or beer can. (just keep that in mind), and also, I'd highly recommend a coil cover. The only time there a pain in the butt, to me, is when they get wet salt water sand between the cover and the coil, but even then, it's not all that bad, most of the time, and your ground balance should take care of most of that, or you just take the cover off and wash things off and try and dry it the best you can or just don't use the cover in salt water. At any rate, you own one of the best detectors in the world in my opinon, only surpassed (in my opinion, pretty much) by the Explorer, and I'd say the Quatro can run pretty good even side by side with the Explorer from what I've read over the years. Marc.