Gary R.

Having them mounted as we speak....

KOAN

I have used many sets of MPSCs and R6s. For me, the MPSCs last 2x the Hoosiers. I don't always run R6s until they are corded, though. I do run MPSCs all the way down. I find that as they get heat cycles into them, Hoosiers get pretty hard and slippery ( worse than older MPSCs). In hot weather, MPSCs stick a lot longer. In cold weather, Hoosiers are much safer. It is tough to get heat into MPSCs when the temp is 60 or below.
I try to keep one set of each. Bottom line, though, Hoosiers are faster.