I found a little patch of thawed ground at one of my favorite parks today so I had to give the new addition a try. I hunted in the pro mode with zero disc. Ground balanced at 85 and sensitivity one step below max. The AT PRO ran very stable and quiet. I was able to find a bunch of clad and a few nice keepers. The 1916 and 1918 wheat pennies were in the same hole at 8-9 inches. The signal was a faint high tone and the ID was accurate. The 1941 wheat was only at 4 inches and came in loud and clear. The 1944 Merc was at 6 inches accurate ID and clear high tone. All in all I was pretty impressed with the AT PRO. The park I was hunting has been heavily hunted by myself and countless others. Not sure yet if the PRO will replace any of my other machines but it certainly is a very capable addition to the family.