Found a vacant lot today I could hunt on my way home from duties. So I had the Ace in the Truck , so what the heck I said." I thought maybe 30 minutes , but U GUYS KNOW HOW THAT GOES. Ended up 2 hours and more lies to myself about this will my last good signal I will dig . Found 2 wheats (1917,1944) And a host of clad . My little Ace 250 did a lot of one way signals today and some two way that sounded good , but after I dug the hole and the iron halo was broken , nothing there. But I know its not a magic wand , its just doing its job. I will Take the ATpro back to this lot next week , or maybee tommorrow(weather permit). And the pro mode will tell all . I have hunted with the ATpro about 6 times in pro mode It is superior to the ace , but I wont be selling the Ace for a while, Its my little buddy.