Excal 1000, Excal II, Sovereign GT, CZ-20, Tiger Shark, Tejon, GTI 1500, Surfmaster Pulse, CZ6a, DFX, AT PRO, Fisher 1235, Surf PI Pro, 1280-X, many more because I enjoy learning them. New Garrett Ca
Because our ears hear differently, some phones work well with one detector and not as well with another. Personally I like Grey Ghost on my Fishers but my Garrett works better for me with a different brand.