Heatsink, blues, or snowys, I run blues on a really worn grind and they are mint, real good hold they havent worn down much and arnt overly loud. My mate just got some snowys and he is running them on a smooth rim and power is excellent so on any type of grind should be amazing, they also feel abit harder than blues so may last a bit longer, i'll certainly be trying some next. Id certainly go for something from the heatsink camp as i havnt heard a bad thing about them in years