I prefer two tone in relic hunting and only switch to deep mode to confirm small light signals (the deep mode sometimes IDs better when you cant get an ID number on 2 tone). Deep mode would require very slow hunting and unless I am in a really hot spot that has produced a bunch of relics I don't want to hunt that slow.
OK couple of hunts this weekend .... one a 1940s era house garden and the second an open field that was part of a 1700's plantation site but a long way from where the main house was.
1940's house .... After the first few signals in the 30's turned out to be heavy foil I started only digging 50 and above..... still dug some trash in that range but 80% of my digs were good targets 14 clad pennies, 3 wheat pennies, 3 clad dimes and 1 silver dime, one costume jewelry ring. 1 silver hat pin/ broach and the shocker ....1 round ball (was hunting in tree tone most of the time with settings gain 85 - ID filter 10 - )
1700s field - started off digging only 50 and above and dug 2 round balls, one carbine, one button back, one flat button (small) and one large flat button and some other pieces of brass..... only trash was large aluminum and modern bullets/shotgun shells
started digging 30+ later in the day and dug a couple of small rivets and a little more trash. (hunting in two tone gain 70 - ID filter 10 - Tone break 23)
On one note the button back was basically at the surface and actually sounded very broken up but number was good ..... raised the coil just a bit and it sounded better so if you get a broken tone but your pushing overload check the target closely as it may just be very shallow.
I like the machine ..... but still tweaking where I want it ....
I out dug number of good targets both days against the guys that were with me.
Arm got a little tired after back to back days but not terrible. Machine is still a bit chirpy in two tone mode at 70 gain ....
With rain cover on it's easy to hit left or right button on control instead of up or down so watch your settings if you have the cover on and switch modes or settings often.
The ID range is about 6-8" on smaller targets but you can switch to deep mode and slow sweep and get an ID a little deeper
I think I will leave my tone break at about 23 .....this seems to work good for relic hunting