I've been hunting with an XT-70 for a year and I love it. My wife occasionally hunts with me and my son. Up till now I've been giving her my F70 to hunt with and now she tells me she doesn't really like it. I really haven't hunted much with it either and I ran some comparison tests and I've gotta say I can't blame her. Well, I'm going to get her an X-terra 50 to replace it and sell off the F70. What I need help with, is advice on what coil to put on the 50 so that it and my XT-70 won't interfere with each other so badly (anticipating this, although I could be wrong). Would the 18.75, 9" coil be a good choice to replace the stock coil on the 50 for general hunting?