I have had a CZ20 for the last 5 years and love it. It is in for repair, but has been a workhorse. I bought the CZ21 recently and was very disappointed. I have had to return it for a new one twice. I am on my third. The CZ21 does not seem stable in water/wet sand. When using the CZ21 at the shoreline or in the water, it is very chattery when waves go by (when discrimination is in all metal mode.) It drives me crazy and I am probably missing faint targets due to the chatter. When trying to ground balance (in all metal mode) on wet sand, it immediately sounds off.
Also when on wet sand or in the water and when discrimination is on 1 or higher, you tend get false signals unless you lower sensitivity to 3 or 4 . This is similar to the CZ20, but a little more erratic. On dry sand, it works better and very similar to the CZ20.
I dont seem to be able to guess my targets as well as I did with the CZ20 and dont think this will improve much. I am digging more foil, bottle caps and pennies than I did with the CZ20.
I spoke to a Technician (Daniel 1-915-633-8354) at the First Texas repair lab and he said it should not be acting like this. He said he would look into this.
As much as I like and would recommend the CZ20, I would highly recommend not purchasing the CZ21 until they figure out what is wrong and fix it. I had high hopes for the CZ21 and if only it was just as good as the CZ20, I would have been OK with this but the CZ21 is a step backward. They took forever to release this model and I think it is still not ready.
The third machine is acting just like the first 2. I hunt in South Florida and there is no mineralization here, so this problem should not be happening.
If you have had a similar experience, please let me know.
