The stats have not been reset since the game started last fall. In one of the original iterations of gameplay, there was a bug on Kiawah where you could aim out of bounds and the ball would bounce like hitting concrete, land back on the fairway, and you could get a 280-ish yard drive out of it. As far as I know that bug has since been fixed, but the stats resulting from it are still listed.
Given that, I use the R9 and also find it to be very good. My longest with it is 262 (just on Bethpage), and that was with a good tailwind.