Hopefully within two weeks I will finally be the proud owner of a new X-terra 70. I have been detecting for quite a few years most lately with my MXT. My main pursuits have been and still are coins and jewelry. I'm still a little mystified by the different coils available for the 70. I hope to purchase at least one optional coil at the start. Seeing as my interest run mainly to coins and jewelry what coils would you recommend I get. We hunt mainly old homesteads where the terrain is both pretty clean to mildly heavy with prairie grass. "Most" of the time trash is at a minimum. I have very little trouble maneuvering my MXT with a 6x10 coil. I would very much appreciate your advise on types and sizes of coil I should look at getting. Can hardly wait to get my hands on the 70, have waited a long time. Thanks