I also fitted the R6 shock a few months ago, and was really pleased with the difference in handling.
I've now fitted new k-tech fork springs, re-filled with fresh oil, and raised the forks through the yokes 12 mm.
I would say that it's the same difference again.
No diving under braking into corners anymore, and much quicker steering in the twisties.....
A big, big improvement for 300 quid or so and a few hours work.....
Cheers.
Dave.