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
If there is only one coil that everyone should have besides the stock coil, it is the sniper coil to get between the trash and speed up recovery where you don't need a pinpointer.