Don't know when the big twins were banned but it looks like the 9x0's only one once - 2002 with Meoni as the pilot (see here). From the footage that I've seen the benefit of the speed of the 950's was limited and over all the power and weight evened out the field so that the single riders were not that much slower. Besides Yammy has still won more times than a KTM 
Yamaha 9 wins
Honda 5 wins
BMW 6 wins
KTM 8 wins
Cagiva 2 wins
Really comes down to if you are a road blaster who is seriously into walking home speeds or if you want to carry a passenger. If you will be mostly one up I recon the 640 is the way to go.
Anyway this whole discussions is a bit off topic and a bit moot. We are comparing a Tiger/Tranny with an Adv. Yes the Adv is a "stallion" compared and it will be much better off road but at what cost I think was the original question?
Cheers R
"The ultimate result of shielding men from the effects of folly is to fill the world with fools." - Herbert Spencer, English Philosopher (1820-1903)
Bookmarks