Yup, the audio and visual circuits are running beside one another and audio is king. (Larry said something hugely important on always staying in touch with what that threshold is doing......using it as an "alert" can take you to another level.)
Larry triggered a memory on an experience that ingrained this important tidbit home with me. A friend and I were searching an old football field/turned town park behind a re-purposed 1890's high school. We went in fully knowing that this place had been hammered by 40 years of decent tech and knew only "deep" or "random miss pocket" was going to be the rule for a find. (When going into one of these kinds of places, the biggest thing you have to realize is original/earlier dirt profile is more than likely compromised from smoothing, reworking to tear out running tracks,etc....and probably finding original dirt should be priority.) It was fall and looking out across the field you could tell where soil drainage patterns indicated where the loam was thicker, so I headed there first. As I did the initial adjustments I could tell depth wasn't going to be an issue and just did a quick survey of what was there....no easy targets at all of course and decided to radius out to see how big the "loam spot" actually was (as my bud was doing the fields perimeters). After realizing this area was fairly tight to where the grass was still green, I maxed settings to be at the point of just getting into over sensitive/slow recovery speed and began methodically massaging this "green spot" for about fifteen minutes not digging a thing. All signals were largish iron,iron bits,tabs.....and tiny nulls. Tired of only investigating,I decided to dig. Most of those nulls, "bit iron", "bit iron" with the tiniest "quick flash" 92's....turned out to be a pocket of Indian Head Pennies! Brought out around 10 of the most beautiful,smooth/detailed jade green jewels (that got me started on a set of these guys)!
This was all with a DFX (and can only imagine what would pop out if I went back with my V3i). Towards the end of our time there (and on our way back to the truck) we started complaining about "no silver anymore"......no sooner did the whinning stop, my next signal was a '42 quarter! Thank You detecting gods for listening and we had a good laugh....."there" was the random miss we had talked about earlier!
Audio is king.....and VDI's an important adjunct. I suspect audio is processed fastest by us all and having a machine that has the capability to adjust to our individual hearing for this is paramount. (Does not get better than the V3i for this......sorry VX3 and others.)