It is a shame that fine American companies like Whites and Garrett fell so far behind. But all you can do is move ahead with the best detector you think is suited for your types of hunting.
I went from using an AT Pro for three years and it was a good detector for its time. Then moved on to the Nox 800 for 3 years. The Nox and I never really meshed. Probably mostly my fault for trying to use all the advanced settings without really knowing what I was doing. Should have jus stayed in the standard factory modes that were well designed by the engineers. Probably half the time on the 800 I was using a detector that I had through ignorance detuned.
Plus it was just too sensitive to me. To quiet it down, had to reduce the sensitivity and there went the depth, which left me in the clad, pull tab, pop top, bottle cap and can slaw level of 4 to 5" deep in metro Atlanta. Never trusted the 800's depth indicator.
On the CTX3030 you can trust the depth indicator (measured in actual inches) and find the deep silver because the CTX3030 is a much quieter detector without having to reduce the sensitivity. Just set your manual sensitivity to what the detector indicates on the sensitivity panel as the proper sensitivity. And often you can crank the sensitivity up even more without having the chatter. So that is why I went with a new CTX3030 even though it came out in 2012. Have been very happy with this coin machine.