I am relatively new at detecting and have been using my sons Ace 350. (he upgraded). I am still under my first 100 hours. This afternoon I went to a city park where I found my first wheat and a hat pin/broach with garnets, my first time out . This park is heavily hunted and one of my buddies has pulled out several mercury and barber dimes etc. I hunted an area where he has worked and found lots of silver (with a Minelab). I found a very nice clean 1911 Barber dime, a Indian Head nickle, date not yet known and what appears to be a 1900 Liberty Head nickle in one dig at about 4 inches. They are soaking in hydrogen peroxide This was after about 3 hours of finding nothing but two zinc pennies and a lot of pull tabs and a smashed up transistor radio, crushed cans and bottle caps. I don't dig every hit as I am learning more. But the big hit today indicated dime to quarter with a solid tone at 4 inches. I dug my plug and rolled it back, passed the coil over the hole and had the good tone and indication on the display. With a pin pointer I found one penny. Still a solid ring so I prodded around and found the other penny. Still another solid tone passover and moved more lose dirt around with the pinpointer and found the barber dime. Same 8 inch diameter hole. Passed over the adjoining area with the coil and it rang up solid nickle. Turned out to be a pull tab and ring within 6 inches of my 3 coin find. I know that had whole spot been screened out as trash by other detectors. My son upgraded from the Ace 350 for more disctimination and I know it has limitations. I have searched a beach in Georgia and figured out the mineralization and salt on my own. But still found pocket change in yet another area covered heavily by at least 3-4 other people daily. So I can say I am happy so far with the Ace 350. Would I upgrade if given the chance? Of course! But the one thing many hunters may lack is the patience I have to look and dig. Will I miss stuff? Indeed!. But it appears the better detectors miss stuff too.