I used to use the 7 tone relic mode. Some call Alt mode some call it a trick anyway, a couple years ago for most of the hunting season I used Alt relic and was all about it. My finds increased quite alot. I dont think it discs anything out but just doesn't sound quite right. I never wanted to go back to C&J after that. So not sure on that.
I now use the Alt mode Prospecting with Dual Control to Hyper SAT. At first seemed a little noisy because everything has a tone and VDI. No discriminating out. After discovering this, Relic mode just sounded dumb to me. I will admit that this mode loves bottle caps and some bent nails or old rusty iron with a hole in it. Results vary depending on coil. My finds have greatly increased but so has my dig count.
Sorry it has been a while so hard to remember much and cant test. Had to send to Sweet Home.
Hope this helps a little. Hope more chime in with their experiences cause this truely is what saved my Pro. Detech 8x6 helps too.