I'm not new to metal detecting just new to the new technology that Garrett has, after I learned the 350 and the DD coil its a awsome machine,liked all the preset programs it has and the custom program is my own special setting I call it the gold mode it works great with coins accepted minus zinc/bottle caps and all gold range accepted with most except one iron bar left, the DD coil is best learned of how it works best is air testing, this helps a lot,I should be a spokesman for this machine! Garrett believer all the way! Don't hestiate to get one its worth the money!