I been Metal Detecting for a year now started out with a Ace 150. Sold the Ace 150 and got a Teknetic Delta 4000 and a Whites Coinmaster GT. Both very good machines!! The Coinmaster GT is my favorite out of the two.That Beach Mode works great also.Up so far this summer found mostly coin but did found a iphone 4s in 11 inches in sand. Bud-sc