Welcome to T Net! I'm sure there are MD'ers that have, hopefully they will check in soon. I have a M 6 and am very happy with it, and what it is finding so far! HH!
While I'm very tempted to give you a funny answer, I think you're new so I don't want to risk confusing you. The v3i is a very capable detector and I'm sure it's users have found all that stuff.