Sorry, I missed the question with my last post.
I would totally agree with the assesment of Catalyst - the RP36 is a tiny bit harder than the Sorex 32s, so when both are fresh the RP36s will be a touch slower but will last much much longer and be consistent throughout the wear life.
For initial grip, the Sorex 32s are in between the RP30 and RP36s, but grip has an inverse relationship to wear - the more grip, the shorter the wear life.
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