For those who want to know I just received an EX DD 6in coil for my etac.First time using it in about 45 minutes I found a 44 merc a 48 rosie a 23 and 40 weath.I know that does not sound like a lot but to me and where I hunt it is also my hunting buddy who also just got a small coil for his decetor found a 14k ring.I guess what was so funny is we have been over this yard afew few times with my etrac stock coil and his 12 coil.next day I fond a 1918 and 1919s wheat and other modern stuff.all and allI believe to EX 6inch to be a good coil.I could run it max on sen, most of the time .I am not saying you should run out and buy one of these coils but I do believe that you should have at least 1 good small coil to hunt with .