For more info on the mxt's capabilities you should look at Steve Hershbach's "Alaska Mining & Diving" site, He has found pounds of nuggets from 1 gram up to 6+ oz's with the mxt, if you look on his website he lists all the best metal detectors for nugget hunting, he is a serious pro at this type of detecting. I purchased my mxt after talking with him face to face and also purchased an infinium from him so I could have the best of both worlds which is a great vlf like the mxt and a great pulse unit like the infinium, Both these units worked great for me and I put the mxt's coil over some nice nuggets, 22+ oz's total over 6 yrs hunting between North Carolina and Alaska. I very seldom used the prospecting mode however because I found that the relic mode worked even better, my setup/tune was usually relic mode disc 2, faint threshold tone, trigger forward and sensitivity anywhere from pre-set to as high as 3 depending on soil. Depth was fom 2-3" on .5 gram picker to 10" on a 27 gram nugget (My largest),