I own 3 Sharpshooter coils, the first was for the T2 which allowed me to detect quarters right next to a chain link fence. I later purchased one for an Omega 8000 because I was happy and impressed with the first. The third, I got for a new Patriot recently for a price I couldn't refuse and it has replaced the stock 7x11 on it too because the toe of the coil is so sharp. In my opinion, this causes better separation than adjustments to recovery speed. The coil for the Omega works on my F19 and Gold Bug and I have messed around testing the Sharpshooter on them and they work very well on them too but I think the stock 5x9 Fisher coil that came on my F19 is even better.
I use the 7x11 sometimes when the chance of having multiple targets close together are not as likely and EMI not as big a problem. As always, this is just one person's opinion.