Taking my X-Terra out 2morrow to the coast for my 1st metal detecting at the beach. Any suggestion on which coil would be best I have all High freq. Coils the stock and 6" DD 18.75kHz and the 10X5" elliptical 18.75kHz any settings coil preferences ANY tips would be great I'd like to come home with something. I've started my 2008 count over since I got the X-Terra 2 day was a short stop 3 Penny's all new and a 1943 nickel. again thanks for the help this forum Rocks!