The White's MXT does it all;
Nugget hunting,
Relics,
Coins,
Heavy black sand,
Caches,
Salt beaches, etc
It is very lightweight and has the best balance of any other detecor I've ever used, except for other White's. White's are EASY to swing for 6-8 hours at a time.
It has decent depth and lots of toys. When I first tried one I didn't know how to stop it's problems with hot rocks, but learning the machine and ordering a different coil than the 9.5 would have fixed that problem very well and very quickly because I learned this from watching a well-experienced user of one..
I don't think there is a better all-around detector made anywhere. It is not as good as the old Compass detectors for as wide a range of use, but it's the best on the current new market today.
I have a cz-70, often touted as the best all-around machine, but the MXT has more functions and finds BB size nuggets deeper than the cz-70. The cz-70 is very good on our horrible beaches here, almost as good as my Compass R&C, and that is amazing. But in really high mineralization the cz-70 will sometimes not read a nickel.
The MXT works VERY WELL here in Oregon on the beaches, and we have some of the nastiest high salt/high black sand beaches in the world. Minelabs work like new Cadillacs here for smoothness of operation but if swung too fast they lose good targets. I know this because I've gone in behind others using them and found out. When I tried it myself the Minelabs (Expls and Sovs) the same thing sometimes happens, so there is obviously a problem there, and it's not the operators fault, unless moving at 5+ feet per sec is an operator's fault..
Note: A Compass au52 on record found (in Nevada) the very smallest nugget ever documented and displayed publically. It was found in a 4" chunk of quartz and the nugget was about the size of a dot on an i. It's now displayed in Nevada somewhere in a casino.
PS: Keith Wills has one a Compass au2000 for sale and it has two frequencies for hunting nuggets, a 52 Khz for fine gold and a 13.77 Khz for deeper, larger nuggets. I think he wants $350 for it. It's an excellent relic hunter too, besides one of the best nugget hunters ever made.