Rob,
I bought mine from
www.cabelas.com a few years ago. I've found all sorts of junk with it around my place, but to be honest, I haven't touched it in over a year.
I wouldn't spend big bucks on one until I spent some time out in the field with it. It's not for everyone, including me, and you might find it's not for you either.
For me, I found that the stuff I found didn't interest me. It a fair amount of work for minimal reward. My land belonged to the Army during WWII and I have all sorts of junk from then. It's just junk to me and better left in the ground. But that's just me.
Steph's Dad is a huge metal detecting fanatic and he doesn't go anyplace without at least one of his detectors. He has them for under water and various heads for different areas that he goes to. In al the years he's been at it, he's found a few rings and some coins, but nothing anywhere close to what he has into it in equipment.
I have used it to locate a survey pin and a gas line on a house I was working on, but other than that, I doubt it will get much use in the future.
Eddie