I have a Tom tuned and 3d altered cz6a that I am very happy with but would like a detector that will handle separation and deep iron nails better. I have read many posts on all brand forums and watched too many youtube videos trying to narrow the field. I hunt mostly old homesites. As you know, that doesn't mean that a home site say from the 1800's will not have been occupied in the late 1900's and hold a lot of modern trash or be littered with deep rusty nails. This seems to be where the cz struggles. However, after researching, maybe most struggle in that environment. I have considered the f75, racer2, and even the fors relic. Like I said, I really like my cz and find my share with it and will keep and use it regardless. But what say you? Is there a good companion to the cz that will add separation in the trash and keep good depth?