There are several that really impress me, The Sovereign GT is my favorite as I have tried all the differnt Sovereigns and the GT is awesome for me, infact any of the Sovereigns but the original are some of the best. Take a while to understand them at first and those that do see what it can do. My wifes MXT is a very nice detector also and so easy to use. I had the Equinox 800 and only got to use it a few times before I got laid up, but it too was impressive . I also have Shadow X5 that is the best non metered detector I have used and showed up many of my friends Minelabs at some of the hunts we did.
There has been a lot of different detector I have used since 1973 and some were very good while others were not, but a lot is how you get to learn them and understand them
Rick