I've been quite pleased with mine. I have found that a sensitivity setting around 7 seems to give plenty of depth.and nearly always a 95 with solid bar is a coin. However, as mentioned above. aluminum, especially large aluminum like a can will give a 95 reading as well. My MXT reads aluminum cans as large silver coins also so I'm thinking that's normal. You might do well to practice with your Cibola and learn to thumb the disc to where a nickel cracks and drops out, then where most tabs drop out, zinc pennies etc. and practice, practice practice especially listening. I started with a beep and dig machine and by the time I had picked up a couple of machines with TID I was in the habit of listening closely for a solid coin tone, then checking the TID. I got an indeterminate ID and a different tone with the DeLeon one time, passed on it, then thought about it and went back and retrieved the target. Turned out to be a small scotty dog off a charm bracelet. With the help of a magnifier I discovered it was marked .925 silver. My main point is that what prompted be to go back was the sound, not the ID. In this particular case, the sound didn't quite match a good signal, nor the typical trash signal so the final analysis was to dig. If you are bound to dig NO tabs or similar junk, don't expect to find much, if any gold jewelry as you'll be discriminating that out as well.
BB