Every time you num the 7000 u lose sensitivity or depth so if, an I say "if" use normal ground, turn off soothing, turn up your sensitivity but you can only run the machine to the ground conditions and climatic conditions take the time to get the machine running smooth and quite then start pushing it it,you will find that seven takes at least half hour before it settle in to a grove emi, ground types etc stay away from phones solar panels other metal detectors I don't know what it is but 5000 are heard at least 1k away but I prospect in very open land and small stuff 90 % time I've just found a little honey hole and I do it with several machines in different settings an on different days so don't be frightened to push your machine and if you find a target ,try settings before digging and listen to the machine it all about confidence in machine and research