Hi everyone. I am interested in hearing what detectorists have to say about the Fisher CZ 70 Pro and the Minelab Quatrro MP. I am trying to decide on a really good "all-purpose" detector. I will be mostly searching large open grass fields and plowed fields up on my uncle's farm. I'm not sure of the mineral content there, but I know he still plants corn. I would like something that automatically ground balances itself as you detect, so I don't have to constantly readjust for soil variances. I have been told to pretty much hunt in "all-metal" mode also, because of the possibility of old relics and other stuff. I don't mind digging everything anyhow, so I would'nt mind using all-metal. My biggest problem is deciding on this "multiple frequency" thing that seems to be catching on with other models today. The Minelab I was told uses 28 different frequencies. I don't really understand what that means as far as detecting goes, but I was told it offers superior depth over single and dual frequency models, and that you will find more with them. But I also read that Minelab is pretty heavy to use as a unit, and that it will take some time to really learn all the "singing" that goes on with them in the fields. Taking the time really isn't an issue with me. I will take the time to learn anything. I just want to make the best decision for the conditions I mentioned above. I will mostly be in lare fields, with occasional old home site searching. I like what I have heard about the Fisher CZ Pro, but it is only a dual frequency model. So I would appreciate any suggestions from people that may have used both detectors, and what they felt about them and their depths and so forth. Thank-you. Randy