New to this site. I have a whites goldmaster GMT that I bought over 20 years ago and recently began using it again, nugget shooting in SE Arizona. Having been away from the hobby for years, I noticed there are so many new detectors that seem specialized for gold nuggets. Is my machine obsolete compared to the newer detectors, or is it still considered a good machine for nuggets. Also looking for a used drywasher to play with when I get tired of digging up lead bullets. Anyone out there know of a good place for used drywasher in SE Arizona. Thanks