Don't know where you heard that toomey's were junk either, but it must have definately been someone that doesn't know Jack Schitt, lol, read my post in humor section.
Anyway I have the t5s with bolt ons and they kickass! low end, midrange and topend. You get that bike jetted properly and throw on some more bolt ons and the t5s WILL perform. I know for a fact that the t6s perform well on a pretty much stock bike, my 03 ran great, more low end grunt I think, than top end. just my .02