I have a CZ-20, CTX-3030, Surfmaster II, Detectorpro Wader and a Tesoro Stingray II.
The Stingray II is my favorite to use. Sensitive to small gold and goes pretty deep, easy to use and setup. Rated to 200 feet. It also has the old style connector, making it easy to switch between coils (just can't find coils for it..lol).