Dan, I was a long time cz user as well when I got my F75 and in my opinion you made a wise decision going with either the F70 or F75. I am finding good targets equally as deep and maybe deeper then I did with the cz and on those trashy and hunted hard sites, the F70 and F75 will out perform the cz's, hands down. I still have the cz3d and am not knocking the cz's, they are one terrific detector. For my kind of hunting, though, coinshooting old parks, house lots, school yards, ect. the F75 (and 70) in mho is vastly better suited. I suspect once you have had the F70 in your hands for a little while you will regret not making the decision sooner. Good luck and HH jim tn