I have been metal detecting for 5 months and have a friend who is going to get me a whole sale price on either a vx3 or 3vi. I know I can buy the vx3 without my wife yelling too much, but I dont want to regret not buying the 3vi. I just bought a Fisher 4 and may keep it as a backup but could always sell it and have enough to get the 3vi. I compared them on Kellyco but dont know what some of the ability differences mean. Any Suggestions? I would really like someone with advice. This question may have been asked before but I have to make a decision by Tuesday to order.