Since I have had the CTX for 4 months now, I am well versed in the machines cappability. With that said I have seen numerous posts about falsing and repeating 12-40, 12-42 signals. I assuming many people are used to the old or "not so good" detectors where you have to hear a pin drop in order to get the deep coins. With the CTX what you need to look for are the repeatable targets. Repeatable targets are long and solid audio sounds. Not blips and bleeps that only show up for a second. Also go SLOW. I have now decreased my sweep speed to a near crawl. Why...because I have noticed more targets are showing up whereas before they were missed. I always have gone slow, but now I go super slow...like 4-5 seconds per pass. Also use "sizing" in pinpointing. It helps so much identifying those smaller targets that register deeper than they actually are. I call them "deep shallow" targets. The CTX will read 5-6" and give a good number, but when you pinpoint, you will notice the target is smaller than a normal coin. My last bit of advice...forget the screen and target trace. The sound is your friend with the CTX. You dont need target trace to see two targets. That takes up precious time to look at the screen. Listen to the audio as the target trace and audio are BOTH affected by the target ID. Too many of you are focusing on the read-outs on the screen. I hope this advice can help some of you understand the CTX. Its the best machine ever.