SEF 12X15 against Pro coil

[marxionu]

Can any of you have tested the depth of the SEF 12X15 against Pro coil (Safaris original). How much deeper SEF goes. We have soft soil here and every inch is important.

 

[U.K. Brian]

I tried the 10 x 12 against the Pro and the SEF had a slight edge for depth but also a slight loss of sensitivity on small cut hammered coins. So I assume that the 12 x 15 would have even more depth on larger items but would lose out more on the very small stuff.