Hello ladies and gentlemen, I need some advice for a purchase that I will possibly be making. I am looking for a gold cache, old house sites metal detector purchase. I was thinking of purchasing the Garrett ATX for this use. Has anyone on here been using the ATX with great success? I will be hunting some old house sites but not on the house site itself, more likely around the house so that I don't pick up all the square nails. What about the ATX on hot rocks? I've been seeing alot of good reviews on this machine. I have an older Whites XLT that I'll probably be selling soon to help with the purchase of the ATX. Any help and suggestions will be greatly appreciated....