Havent been on this group for a while since I sold the ZZR1100 boat. Since selling the pig I have had the opportunity to ride A new 999, 1000 Supersport, plus the S4 and other Monsters. Now that the S4 is no longer in production and the S4R is out next year I was wondering if anyone has ridden or knows when these hit OZ. If so what is the difference between the two with regards to riding? I actually found the 2 valve monsters more fun to blap around town on and 4valvers alwaysseemto have that 'on-off' feel with the throttle. Looking at a 2005 S4R but if they can fit a 4 valve into a supersport I'd consider. Coops