ive had two so far my first was an 02 with 16000kms and my current is a99 that had 37000kms on it. i now have about 41000kms on it and it feels jsut as powerful and composed as the new one  rode. like it was said dont worry about k's to much more jsut condition of the bike. also if a bike has a pipe and power commander it is very possibly it has a bad tune which would make it feel like it had less power. also suspension setup goes a long way to making the bike feel like a bucket of shit or fantastic. if you talk to a few guys on here they recon 20000kms isnt even run in. one of the members that is up here changd over to a big block and his stock bores still looked pristine and that was at 70000kms
Regards
Dan
Dan