Back in the mid 1980's I was finding numerous Barbers, Indian and early wheat's, V-nickels etc. Several of these coins were at 6-7 inches back then. That was as deep as I could get. I got away from detecting for a few years and have been back detecting for about 3 years now. I have an AT Pro and an Omega. I love both machines but just can't seem to get those old coins like I used to. I feel these coins have slipped to that 8-9 inch range coupled with more trash creates this problem. I am hunting old house yards and finding 50 to 70 year old coins at the 6-7 inch depth but nothing beyond that. I have been reading a lot on the E-trac and F75 and feel they may be deeper. Any input on detector choices would be greatly appreciated.