Comparing detectorist A using an AT Pro with Detectorist B with an AT Pro and Detectorist C with a Nox is not going to settle anything. There's no way to compare skill, ground conditions, and available targets at varying depths. Add the variety of coil sizes and configurations, and you're always comparing apples to oranges. No doubt that the AT Pro is a good all around machine for most venues. On land or fresh water, with no major interference from mineralization or EMI, it will find 80-90% of the latest and greatest out there. It's when you get challenging ground conditions or decide to hit salt water beaches that the AT has problems. In that case, some of the newest SMF machines will work MUCH better than the AT Pro (and other single frequency machines).