I gotta tell ya, RC30's still do it for me!
I got myself an NC earlier this year as a track bike, a rotten old abused race bike which I'm now in the process of rebuilding completely ready for next year.
First time out at Mallory in october I went less than two seconds slower than I did on the 748 and boy did it sound good!
[Edited on 19-12-2005 by desmojen]