Why?.
Very cool bike and underated,can be made to go quite fast for a pro 250 without resorting to gp bits as with the TZR.
Honda build quality,my crank lasted over 14 years before it died.
Then just to even the experience out got an Aprilia rs250 and had both and am racing both.
The nsr is small and light,with smooth power and quite quick turn in even with the rvf front end including the front wheel.Brakes are quite good but not as good as newer stuff,though the rvf nissins seem to feel stronger and give good feedback.The standard forks need a bit of work and do flex under hard brakes i think a deeper lower tripple clamp would fix this.The rvf forks have no flex and make a difference on the brakes but again need a respring and shiming to work well on the track.
The rs is bigger but once stripped down for racing feels quite light but not as light as the nsr.The power is typical rgv not as smoth as the nsr but not a prob on the track you just dont go that low with the revs.It turns in quite quick if set up to turn quick ie bit of extra ride height forks dropped.The brakes are very good and you can slide the front out if you grab to quick.
The standard suspension is quite good for the track and needs less work than the nsr,which is an older bike.The rvf front fixed this.
Both are very good bikes but its a shame to use them on the road as they are much better on the track.They should all be raced i think the world would be a better place for it.