Good man.
Wikipedia has a good write-up on the 9R's evolution. B's are their own, a venerable version of the original GPz-900, built from the ground up. Next comes the C in 1998/99 much lighter and even more capable, but with the smiling headlight that seems to set people either for or against. Next is the E in 2000/2001 with more revisions and the more modern dual headlights. Many of the C & E components naturally are interchangeable, while things like the upper front fairing are not.* Probably the smoothest sportbike there is, but not designed for stunting, as the frame is prone to stress cracks from such activities. Last is the F for 2002/2003. Oh the beautiful F. The engine probably feels more like the C, solidly bolted to the frame, with more vibration and a buzz to go along with the sensation of speed. C, E, & F plateau in performance, each with their own traits and loyal following. Don't even try to compare the F's brakes to any previous model though. These are the brakes and rotors the 9R was meant to have. The pinnacle of carbureted engineering, but still heavy by today's standards. I've spent the last three years, 52,000 miles, on top of an E or F, riding with the likes of Zuk Busas & liter bikes on down to 600cc crotch rockets. The other bikes display their prowess intermittently, mostly at the beginning of rides. But the most impressive overall streetworthy sportbike in IMO is the 9R. She's the one that comes out in front at the end of our rides. Power. Performance. Range. Comfort. While others have long since turned for home, sore and tired, the 9R begs to go on. The only thing holding it back is the the rider's decision. :evil Do I lead what remains of the ride-group home? Or do I go back for more on my own? You know, there's still several hours of daylight left and she has the fuel to make it to the next state.
*** pondering ***
Yeah. Ice cream sounds good about now. "Sorry boys. I'm going back to do the ride loop again. Any takers? I'll buy. Didn't think so. See ya next week." :crazyloco
* Some have attempted and completed this modification. It's both time consuming and costly. I think if you want dual headlights, bite the bullet and get an E or F.