I've only played a couple of rounds with it but so far it's a bit mixed. It is certainly very long, from fairway as well as tee. You can reach more par 5 greens in two compared to the L89 version but, as already suggested elsewhere, you might not hold them. Stopping power does seem to be down a bit, especially with a tail wind.
I haven't tried it from the rough yet, the R1 driver is so good I rarely get the chance these days.