I have JSR for DC and 360, and I still have the copy of Sega GT JSRF I bought waay back in 2006 when I got my first XBOX.
I like the franchise. JRF was more of a skill play while JSRF was more laid back. I was so used to the controls that I kinda dissed JSRF because you know you had to work the analog stick to get those large graffitti out, and I always thought it was ingenious because you felt like you were really doing the tagging.
One night I played the JSR HD on 360 and was blown away of how great the graphics were from the DC game....but I put in JSRF and noticed despite the controls and laid back style there is a lot going on graphically that made me sink into JSRF and not look back.
Now after 7 years I appreciate JSRF more than I did back then.