I just purchased a MXT and I'm wondering if you turn the threshold down to just barely silent in the coin and jewelry mode does it then operate the same as the M6 then? Also I am wondering about the 8x6 Butterfly coil that I think Kelleyco sells how does it work on the MXT? Has anyone did any tests on buried targets etc. I might also ad I have a MX5 and hope to have lots of fun with both when the winter here in Wisconsin decides to quit. Thanks in advance. Joe