OK, I've taken the GTI out a couple of times. That is not near enough time to make an assesment. However, today I hunted a school that was built in the 20's with three guys from the club. The detectors that were there were an Ace 250, a Bounty Hunter, a Tesoro Vaquera, and the GTI. The school was covered with trash, and we found plenty of it. At the end of the hunt we all met at our vehicles and the only one that found coins was the GTI. I only found three cents but I was amazed that no one else found coins. I could tell a difference between the coins and the trash very easily just listening to the tones. The target ID and the treasure vision really were dead on. So far I am very impressed with my new machine. I'll update more after more time with the detector.