Thanks for the info! I was just about to post a query about this as I just bought a slightly used MXT with the stock coil. Got confused in looking at coils on the Kellyco site and they don't list the Eclipse 4x6 DD in their inventory. At least I didn't see it. They've got a Blue Max DD....is that worthwhile or is it even made for the MXT?
Just picked up the 4x6 dd and love it. I can lock the tracking and nose it within 1-2 inches from fences and tot lot metal posts. Separates trashy Relic areas very nicely. Its a great confidence booster. I am a long time Gold nugget shooter / prospector, but fairly new to Coin / Relic hunting .