I have owned an ACE 250 since they first came out. Didn't like it at all. So off into the corner of the garage it went.That was about 3 years ago or so. To show you how much I dislike some metal detectors I gave my Explorer away. I didn't sell it I gave it away. Last January while at the Shot Show in Orlando I happened upon the Garrett display. I talked at length with a real nice fellow who advised me that maybe I needed their 4 inch coil. I bought it. Today was the first time I decided to try the Ace 250 with the 4 inch coil installed. I ain't ever puttin a bigger coil back on it. I found four quarters, two nickles, six dimes, 47 zinc pennies, one copper wheat penny dated 1952D and one necklace. This was at ball fields and tot lots. Pull tabs lock on real good as nickles. I hunted mostly in the jewelry mode.