If you're very, very, very brave (or want people to think that you are
) you'll need corsas. If your honest, you'll probably never ride fast enough on the road, or the track come to that, to give the standard diablos any serious trouble.
I'm not the quickest rider out there but I do ride enthusiastically on the road and usually manage to lurk around in mid-pack of the fast group on trackdays. Standard Diablos have taken all the pasting I can give them and sneered "Pah, is that all you've got" back at me, with only the gentlest of predictable slides.
Remember that people racing SS bikes in DesmoDue also use standard Diablos.
(Ooops, did I just break the voluntary DD posting amnesty
)