I have learned more in the 2 minutes it took to read your post since I started with the Etrac a month ago. I have come to many of the same conclusions. I do better with manual sens, and pinpoint mode will pick up targets you are walking over. I was not aware of Tone1. I will be trying it out. I am glad I didnt sell my F75 now. I live in the southwest and have hunted clay bottoms or the Rio. You have explained a lot of what I was seeing. Clay is bad lol. One thing I didnt see mentioned was coil selection. I am going through a few coils to find the best one for my hunts. Air test seem silly as I dont get much air testing inside the house. I think I made a good investment with the Etrac.