Hi mick if your getting an F model go for the F2 , they have the best brakes best handling and most performance of all the standard sohc 750,s, ignore all the negative about them ruining valve guides and engines, there is truth in the accelerated wear in valve guides, but on a fresh set you should get 30,000 miles before problems, and if you look about most people have rebuilt their k models before 30,000 miles anyway,
pete