I've been hunting with my at gold a few years now and would like to upgrade to a newer better machine. I'm from Chattanooga Tn and only hunt war relics. What do you guys suggest? Garrett ATX? Minelab 4500 or 5000? These are just some I've been looking at, I kinda hate to spend over 2500$ on a machine but it's not out of the question. Just wanted some more opinions. Thanks!