Hope you don't mind if I chime in here, as I am new to the Deus as well. I used Deus Fast for the fist three months or so, and have just changed over to Full Tones. It was relatively easy in Deus Fast, but the full tones are definitely a different ball game. I am hitting spots that I thought were void of good targets, so the good stuff I have found in Full Tones hasn't been a clear awesome signal. I will say however, even through the insane chatter and headache inducing bleeps and grunts, the good signals shine through if you are careful. For example, last night I found a 1940 Canadian cent in a hole with three nails. Sweeping broadly over this spot before digging sounded pretty bad, but there was a nice little "peep", I locked onto it and sure enough it sounded really good when going back and forth ever so slightly. I'm saying I was moving the coil back and forth maybe an inch or so, any larger of a sweep sounded like crap. Also, the numbers on the screen mean less in these scenarios. The numbers will be jumbled up sometimes with lots of junk around, but you may hear a slight little tone that with give you the vibe to dig. Trust your ears. If it turns out to be a bottle cap, oh well...one less to dig next time! It's amazing how this machine can separate close knit targets. I enjoyed my ATPro, which was pretty good in junky areas, but I am finding things the Pro missed. I almost gave up on Full Tones, I was feeling disheartened, but then it started to make sense. I am very new at this, but it's proving to be worth putting the time into learning.
At first I was detecting in Full Tones, and then when I located a decent target signal, I'd switch over to Deus Fast and see how it sounded. I actually think this confused me even more. It was starting to talk me out of digging targets. I said screw it, stuck with the Full Tones and haven't looked back.