Based on previous comments, Hoosiers only is looking like the more obvious choice since it is also the national tire. Personally I have no problem with having one tire or grandfathering as I just run the leftovers people give me anyway

I don't have much say on what I think of the Hoosiers vs. Toyos as I only ran on the Hoosiers for a few races during the Sept. Triple. They do feel/act differently from the Toyos, but from comments I've heard all year long, it's more of a preference thing than a speed thing. The only complaint I've heard about the Hoosiers that has remained throughout the year is that they seem to rotate on the rims, mostly in the rear, and make the wheels unbalanced. I know people are trying some different techniques to prevent this, but that's the only real issue I see.