The reintroduction of the Minelab GPX 4500 with two coils for only $2699 has in my opinion shook up the price/performance question. Up to now I would have considered the GPX 5000 to be the default "safe choice" for anyone wanting to get into serious nugget detecting with a proven machine. However, there is not a lot of difference between a GPX 4500 and GPX 5000. It really boils down to the Fine Gold timing which the GPX 5000 has and the GPX 4500 lacks. That timing is very good at handling certai