Blimey - where to start????
The best answer is have both !!!! LOL
They both have their merits, it just depends on what you're looking for.
The SPS probably has more character but is not as complete a bike as the R is.
The R is obviously faster, but lacks the real punchy power delivery that you get from the SPS .
If you want to play with the big Jap thou' boys on trackdays, then the R will get you close enough to upset a few, but the SPS will really keep you smiling with its awesome power delivery.
Give me a call Sean and we'll discuss.
Tim