I have had the same experience this past weekend. I am hunting an old camp that I found 20 years ago and found 3 gold coins with the first generation F 75. Needless to say my buddy and I have re-pounded this site in the last 2 year hard with the first Gen.75. This last sunday was sort of the first time back with our first F75, near virgin again. When I first hunted this site 1st gen, I was in je mode, 99sen, 0 disc and 4 tones, with the LTD I was not able to hunt that way, but my buddy still with the 1sr gen still could. I ended up with boost mode, 80 sen and 5 disc and 4 tones. My deepest target was 3 minie ball, 2 were round ,one 58, I dug the first one at 13 inches, second at 15 and the last at 16 inches, besides some small groments from the ammo pouch in the same area, not is in the same hole. My buddy couldn'd hear the first minie's when I heard the target before I dug. After the hole was opened he could hear a faint sound. Yes the boost is TERRIFIC and you need not worry about running the sens. to the point of mind boggling noise. At 80 I had some noise but very bearable to hunt and not a problem hearing the good tones. My smallest find was a pistol primmer that was about 4 inches but what a nice signal it had. Rain all this week so hope to get out next week same spot, more gold there just have to walk over it. I will post the pictures of the finds in the Relic section sometime this rainy weekend.