I use to have a 6000D but it died years ago, so I was looking for a new detector. I bought a Fisher F5 but I'm not sure I'm happy with it. What I need to know is what can I buy for around the price I payed for the F5, around $500 or a little more. Does anyone have an opinion on the F5 compared to a whites in the same class? I have a week or so to return this item so help would be nice....