Well I got the Pro coil yesterday and took it out for a few hours.
I am not totally sold on it but I only got to hunt with it for 4 hours. I will say that I dug three dimes one at 8 inches one at 9 inches and the other at 10.5 inches!!! Something I haven't done with my Explorer in a LONG time. I also found a Canadian Cent between 9 and 10 inches. So I can see where the depth is MUCH better on this coil.
Pinpointing is easy with the thing. I did have 6 holes where there was nothing there. This hasn't happened to me in a long time. The machine would say the signal was in the four inch range and I would dig a big hole and find NOTHING. I remember having the same problem when I first started using the Explorer.
I can say I am a little more sore this morning than I usually am after swinging the new coil. Must be the drag everyone is talking about.
I will also say that I dug some TINY targets last night about 8 times the number I have been digging, so the target resolution on this coil is VERY impressive.
I will have to try the coil out some more in a few of our better locations to see if I missed anything. So far my opinion of this coil is that it is good, but not sure if it was good enough to pay the extra $$ to get it.