I like the D2 White's 10" DD coil, I try and run at +2 gain EMI permitting and get dimes at 10"+ all day long with a few being a full 12" in clean ground. If I could only pick one coil that would be it seperation is good with great depth. HH
Detech 10x12. A buddy of mine thought the Detech U13 was best. I live and die over the Detech 10x12 for a big coil, and the Detech 8x6 coil. I would say to get both.