Sam,
I've only the a DFX once so not able to make a good comparison with were you are coming from.
Basically the tone I.D. allows you to detect without having to look at the screen each hit. Many of the places I detect will have a half dozen/ dozen targets each sweep of the coil. If you stopped to look at the screen for each hit you would die of old age before finishing a single boulevard. Use the tone sounds to determine whether to check the screen, at first it is almost overwhelming but eventually it will become second nature. Trust us and hang in there, everybody has had to go through the learning curve.
And... your probably going to ask- Shouldn't the discrimination keep the bad tones from occuring.? Theoretically yes, but it doesn't work that way. Even with iron discrimination on you will still get a lot of iron falsing that sounds like good targets. And on deeper targets, on edge targets, targets mixed in with trash you will can get a different reading each time you sweep the signal. The explorer tones tend to be more accurate ,repeatable, and much quicker than the screen icon. Most people tend to run the explorer with a little discrimination as possible, and use the tones to determine whether to dig or not. Maybe the next generation of detectors will have more processing power for the screen and be as accurate as the tones but it isn't the case yet.
HIT (hang in there) and HH