Tesoro Cibola coil question?

[cw_relic_hunter]

I have a tesoro cibola and love it, it is the deepest relic machine that I have ever owned besides the fisher 1266x I sent it off and had a manuel ground balance put on it to add to the depth I can hit a bullet or button at about 14" what do yall think about the 12x10 coil, has anyone tried it? does it really add any more depth?

 

[tvr]

Air tests for me very close to the same as the standard 9 x 8. Differences are that it should cover more ground volume per swing with the DD configuration than the 9 x 8 concentric and it makes the Cibola much more nose heavy. I spend nearly all my time with the standard coil on the Cibola. I have a couple of places I want to take the 12 x 10 to this year.

If you are in any real bad red clay or other high mineralization areas, the DD in theory should handle the mineralization better ... but I have not spent time with both coils over difficult ground.
tvr