Hi: I just received my used MXT today,and I did a lot of practicing on MXT for a few hours today. Later on in coin mode I got an old 1972 quarter down 7 inches, 3 newer dimes,2 pennies,and 1 nickel (the VDI # was : 18-20,and it locked in on that number. My friend had a Garrett Ace 250,and his detector went over that same quarter down 7 inches,and he missed it. he even missed a coppy penny (VDI # 75) down 5 inches. Am I doing good for the first time out with my MXT? I basically practiced for a while,and then I hit these coins,7 coins in all, no trash!! Any advice anyone can give me on the MXT?? Dano123