i reached Master & got that lofty R11 & it's a great driver. Only prob is, it aint long enough to blast through heavy wind & real long holes,,,just can't get it up far enough.
So i have the R9 now the 8.0 and ,,it gets it up into attack range.
This R9 is hard to get used to,,but if you plan on getting better and getting into attack any pins,,you better get good with the long driver i.e. swing speed if you wanna progress.