That's basically what you want to use. Park 1 in multi frequency, sensitivity at max and still stable, recovery speed 3 or 4. Personally, I like hearing the iron, so, I have the horseshoe turned on. To me, it gives me a bit more info on deep and sketchy targets. I also like 50 tone and a threshold tone, but, those are personal choices and don't really effect depth. Unless you are in an area with lots of bottle caps, I also keep the iron bias setting at 0. In areas with a bottle cap problem, I use F2 @ 6 on my 800. I don't remember if it has the same setting as the 600. Whether the Manticore will surpass the 600 in depth on silver is yet to be determined for sure. Being a new machine, much more feedback is needed to verify one way or another. I know they're having an issue with iron falsing, so, waiting to see if they successfully address that problem. If it were me (and I'm contemplating buying the Manticore too) I'd wait a bit to see how things shake out.