I'm thinking about getting either a G2 or an Omega and hear a lot of good about both, but just the other day I talked to a dealer who carried Teknetics who told me the G2 constantly id's iron in the 80's/coin range. Is there any truth to that or maybe he just got a bad machine? I'm a coin/jewelry hunter in trashy parks and was trying to find something that could id coins fairly deep, pick them out of dense trash, fast response and have the ability to be quiet around emi and not chatter constantly. Any thoughts?