Just purchased a new MXT Pro and have the $150 Whites Dollars to spend on a coil. I am a coin and jewelry hunter, schools, parks, old homes etc. Looking for the best coil to go with the 950 coil which I have. I do like concentric coils for sure but have used DD coils also. I live in Wisconsin and the soil is not very mineralized in most places. Thinking on the 5.3, 4x6 or 5x9 ? I read a lot on the forms and see a lot prefer the bigger 5x9DD. Seems to me that it will be a lot on depth like the 950. May separate alittle better. In soil not very hot would the 950 be deeper? Let me hear other thoughts please. Thanks Joe