I can confirm that red is the fastest, but red with a white stripe is even faster.
Just reading this topic now.
Having bought my street new as standard, it was ample for my riding style for 5 years just using on the road.
Then I decided to tart it up as I wanted black forks, so upgraded to the r suspension, brakes and seat. The biggest difference I noticed was the brakes have so much feel compare do to non r. They’re is also a lot more power on the radial nissins.
Once the suspension was set up for me to get the most out of, I did find that I wish I spent the extra money when purchasing new on the R,
But then again they don’t do it in red.