Looking to upgrade my detector from my old Simplex+ to one of the above two detectors, I hunt a mixture of locations from beach to parks and fields. Any thoughts or help would be greatly appreciated, Many thanks. Martin.
I would (did) start with the 9". If you hunt any trashy areas, the smaller coil will help get down between the trash. It'll still reach plenty deep.
I added the 13" x 11". It's the same width as the 11", so the 11" seemed superfluous (no advantage).
I use it more in open fields where there isn't much junk, or when doing a quick scan in a yard to get an idea of what might be down there.
I probably use the 9" 4-5 times as much/often as the 13" x 11"