The Gold comes with the 5x8 DD as it's standard coil, the Pro doesn't (my only beef with the Pro). I bought the F2 and used it first for awhile, but quickly noticed the lack of GB in my mineralized soil hurt my depth bad and gave me huge falsing. A buddy of mine with his Cabellas bounty hunter and I were at a 1919 farmhouse working the porch area, he pulled 2 Mercs in my grid right behind me!!(we swapped grids.) now I was confident with and loved my F2, but she didn't even peep on those coins. So I bought the Pro, I was going to anyway because my F2 had netted me enough to upgrade. After getting the Pro, I found my first SLQ, 3 barber dimes, 5 Mercs and 5 Rosie's from the same farmhouse. The GB along with Pro mode is amazing and killer in my area! Also, a lot of my finds with the Pro and stock coil are in iron infested areas. I find Mercs in holes with nails all the time. It takes a little more work than with the 5x8, a little more patience, but you can do a number with the stock coil alone. I have ordered both of my machines from Bart at bigboyshobbies.net, he has always been professional and amazing to deal with.