I hunted all weekend long (approx 21 hours) with my new nox 600. Finally put this beast to a real test. I hunted fields that had been previously pounded with my etrac and other machines and I did a few door knocks at old farm houses, that are known to be full or iron. To be honest this machine impressed me a lot. Its speed and recovery in iron is amazing. The NY botton came out of a hole with so much iron I am still amazed how the nox gave me such a good signal. My buddy went over the hole and didnt even get a signal except for iron. He was using an explorer with a small coil. Several indians and relics came from the field including the 1877 seated that I pulled from a etrac hit field. I have been using the etrac for 8 years and this nox makes me not even want to use the etrac...lol. Yes I have that much faith in it. The BIG gold was the highlight of the weekend it came in a soild 19 on the Nox and I really thought I was digging an indian penny, what a shock to pull out a size 13 gold ring that weighs 12.5g!!!! Also got several nice indians including a 1875 and 1879 that came from the gold ring farm yard. Great weekend or amazing finds..........more finds than I got in the last 4-6 months of last year!