for one of the following detectors, Tesoro Cibola----Vaquero-----Eldorado , or a Troy X-3. Age and deteriating health are forcing me to hunt with a lighter weight detector. The Nautilus is in great shape and has super depth. I would rate it at 8 on a scale of 10. The searchcoil shows no wear, but there is some minor paint flaking around the edges of the control box. Thanks for looking, Jerry