The Aces generally don't give "faint" target signals, as they are designed with "saturated audio" circuits on the RX side. What this essentially means is that you get a full, stong audio response when you get a signal at all. The only way you "might" get some indication of a fringe depth signal is if the signal is "broken" rather than "weak". At least this has been my experience with the 150 and 250.
On both the 150 and the 250, I primarily use the 4.5 Sniper coils for hunting in concentrations of trash around old buildings, schools, churches, etc. which allows you to run your sensitivity at max. a good percentage of the time while giving you the best pinpointing and target separation available on these units. For coin-sized targets, this combination of machine and coil is usually good for a little over 7 inches with the 250, and only slightly less with the 150.
For the most part, with either model, if you are getting a good two-way signal, then you are likely also getting good target ID in the process. If your detector is showing a good lock at one or two associated icons, the target is generally good. If you are seeing bouncing icon cursors across a range of 3 or more segments, then the machine is more likely trying to tell you that the signal is trash. Large iron overload may stay in the lower segments, or bounce up into the top end segments back and forth with low iron. Foil will tend to give you a wider bounce than tabs because of it's inconsistent shape, and this is a good way of telling a good "ROUND" signal of a ring in the foil range from actual foil. If you get a good, tight, SOLID lock and two-way audio in the foil range on a single icon, best dig it and check it out. The greater percentage of small women's rings tend to fall down into this and the nickel range.
Ralph
