I understand your confusion, I have been hunting with an ETrac for 3.5 years and the transition was not "easy". I now have about 80 hours on my Deus and am getting confident on the sounds. Give it some time and it will come to you. I really like how the Deus hunts and the responsiveness is wonderful (not to mention the light weight). I have started cranking sensitivity up to 99 lately and the Deus runs quiet (Reactivity 2).
Last Friday and Saturday I went back to one of my places (adjoining 1912 and 1929 yards) that I had hunted hard with my ETrac (1912 Barber quarter, 4 mercs, 2 buffalo's, 20+ wheaties, 2 WWI medals) and the Deus ability shined through. I ended up with a 1941 Merc (silver 94 for the year, #7 for the Deus), 1920 English large penny, 1937 buffalo, 10 Wheats (1918, 1920, 2x1923, 1929, 1920, 1936, 2x 40's, 1x50's), copper 1940 Rabies vaccination tag, toy truck plus other stuff. There was so much iron in the ground (as seen on the Deus display) that the ETrac was not able to respond quickly enough to show everything.
I am still digging strange signals to learn what the Deus is telling me.
I will never sell my ETrac, but I don't pull it out nearly as often since I have the Deus.
Happy hunting!
2 Minelab ETrac's with Pro Coils, 1 RNB Battery, 6x8 SEF, 6" Xcellerator, 5" Sunray Stealth
Minelab Xterra 70 with Stock coil, 10.5" DD 7.5 kHz, 6" Concentric 7.5 kHz
Garrett Propointers (can't hunt without one)