Hey all. I keep a Radioshack bounty hunter in my car,that I use quite often.I don't worry too much if the car is broken into.The machine works well with the 4"coil,but is no CZ. Yesterday I said screw it, and took the bounty hunter out and put in my CZ70. I live in Florida now,and don't Relic/coin hunt as much anymore. That's what I used my CZ for.I spend most of my detecting time in the surf,with a P.I. unit. I hit an old church tonight on my way home from work,with the CZ .About 10 minutes into the hunt,I got a round pulltab signal at 6 inches.Bingo! my 4th gold ring for the month of august(3 in the surf with my P.I. machine) This is the best month I ever had for gold. I went three months,May,June,July with no good finds.August I can do no wrong! I think the CZ will be getting WAY more swing time from now on! Good luck,and happy hunting.