Just thought I'd give an update on my experience of the L96 BB driver V's the R1 driver.
While the Bertha is a great driver I try to avoid using it on rounds with high winds so bought myself a bag plus so I could quickly have a different driver when I wanted it. Of course, sometimes I forget to change and this really makes a difference between the 2 drivers obvious.
If I forget to change to the R1 for a windy round I have to really be on top of my game to get the ball exactly where I want off the tee and post a good score with the Bertha.
If I forget to swap to the R1 for a low wind round then I play as usual, there is no down side.
Basically, I don't think the Bertha can be considered an alternative to the R1, it scarcely makes sense as an addition.