I have been looking forum for main difference between GM1 and GM1+ but couldn't find it.
I am new to metal detecting and I don't know what is better for me. I was looking at GM1+ 18khz dual tone with 10,5 inch DD coil, which seems a pretty good deal to me beacuse I want coins and gold (


I want to know the pros and cons betwen 1 and 1+. I want to look for things older than 1900, which is better?
And one more question: how does disc function work? I know that disc level 2 discriminate old rusty nails, but what about other 7 levels? For example; if I search on disc level 6, what will I discriminate?
Any help is greatly appreciated.
Sincerely,
Dafin