Cool find, I wish you'd stop putting your machine down. Keep at it, you seem to be finding some good targets. Eventually you will dig enough clad to upgrade to a gently use higher end machine. As you continue to get experience you should watch videos of different machines that interest you. I started with an El Cheapo Treasure Cove TC-1023, after 60 days it paid for itself. I knew I wanted a larger coil, I wanted a DD coil, I wanted a machine that had multiple coil options, I wanted the ability to notch and i also wanted to see target ID numbers on the display and not just a simple meter needle that pegged on every target. I was so glad the TC-1023 had 3 tones. I still hunt in 3 or 4 tones, and am not a huge fan of the VCO tones. I was interested in the Fisher F5, there was one locally on craigslist, but I took too long to pull the trigger. So I settled for a gently used Fisher F4. It had all the features I wanted that the TC-1023 did not have. I'd have to say that the majority of my good finds were only 4 to 7 inches deep, so your current machine would have beeped on them.