Agree with Loco on that point. I have an F22 been sitting in the corner for the last 2 years. It is not a deep machine but it picks up on the smallest of items very much like the compadre. Maybe with a bigger coil you could hit 7-9" range but the trash separation is the issue. Great for tot lots and parks hunting.
I'm also a big fan of Fishers audio and VDI actually like it better than the minelab I now use.
I've used Tesoro's mostly but I wanted something with tones and I just love the sounds of the Fisher's. That is why I have a F22 on the way. Plan to use it for parks and tot lots mostly. I do see Kellyco selling F22's with the hotter 11" DD coil option now but I got the smaller 9" coil. Thanks for info!