Idk. I was able to take the MX sport for a test run this weekend. Switching from the TreasurePro to the MX was no huge change. Took me maybe 10 min to get used to the iron, but it was the settings of the iron audio he had it set, as well as changing from full ear headphones to the tiny ones for the RF setup. My iron audio, I learned in comparison, is the annoying grunts are pretty much the -95 hotrock signals. And the clicks I get with my machine having a depth indicator bar present, is the same as an iron target maybe -24 to -50. Just the iron audio, even tho it was still technically discriminated, would make such low noises that sometimes I was hearing phantom noises in my head cuz I was anticipating the activity.
I wouldn't use the salt elimination or beach modes unless you are on the beach. Otherwise there is no need. I'd say run in coin & jewelry mode, but lower the iron audio to a level that you can hear it, but it's def soft enough that positive vdi tones are very discernible. Run it at either default, or one notch above default, for sensitivity. He didn't fool with the frequency shift, so neither did I. Make sure you have the cable away from the coil. I hear it comes with 3 clips in the box. I am about to search for some to use on my machine and maybe some spares. Prob cheap enough for a few plastic pieces. Having the cable too close to the coil where it gets wrapped around the shaft, will cause falsing. I was getting that with my machine, too, until I bought some Velcro ties to hold the cable away.
As far as tones, use 4 tones. The 8 tones is just extraneous. Good concept, but it is just a nuisance when it comes to falsing off iron, which happens a lot where I hunt. Sounds like an accordion when it falses cuz it hits all tones sequentially like a scale. Like any machine, if you hear a target say 91-94 VDI, and then you see it go to -24 or whatever negative number, it's just a falsing off iron. All machines do it. I've had a bunch of times when buddies are using something like the Deus, I go over it with my machine which cost only a fraction of that, and tell them it's iron cuz the inconsistency I see. Sure enough it is an iron target when they dig it. The MX hit a tiny piece of lead which I was impressed with, and was able to depict a shotgun shell in the iron of cellar lip, but having a 20vdi lower reading.
He never ground balances his machine either. I leave my TreasurePro on tracking. I'd just think you're getting falsing off iron targets that other machines get, or you have put the sense too low an/or there is just too much fill at that site.