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
Having used both machines in the field, I have to go with the Minelab 50 for the coins and relics. The MXT seems to have the edge with nuggets though. Both are very good machines.