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
It is maybe possible to hook up a meter to a HH, but it wouldn't be waterproof nor accurate. As for the depper of the two detectors: In the same ground the Sov. GT balanced correctly will reach deeper in dry sand or ground.