It sounds to me like you have been using it in standard mode, which has similarities with the ACE Series, however, switch to Pro Mode and you get the following differences from the ACE Series:
- audio ID to help with silver, copper vs. pull tabs
- manual ground balance for greater depth and sensitivity
- water proof, a feature which allows you to water hunt in the water, rain, fog, snow etc.
- iron audio......allows user distinguish many bottles caps from a coin
- modulated audio....the signal gets quieter with depth of a target....no need to check depth readout
- above average abilities to separate good targets being masked by other junk targets
- similar depth capabilities with same coil size as detectors costing more then 2 x as much as the AT Pro
- VDI Number Readout....that combined with the excellent audio feature really make this detector an exceptional detector
- A fast recovery speed
- 15 kHz frequency which allows for improved detection of small targets, gold nuggets, jewelry and does very well with silver also
Are you perhaps having some other issues which you haven't brought up
.....the ACE series are great detectors. They have features which other detectors have costing much more. however, the AT Series are a step above the ACE detectors, however you pay more for those features.
I really hate to see someone struggling with a detector. There is a learning curve to the AT series, even much more if you have just purchased one and never metal detected before. If you are having issues and don't want to publicly as for help, please send me a private message and I will see what I can do to shorten your learning curve.
John