Give TSS a call in Chase BC. I believe they use M1000 pedals on your cage or double up stock M8 pedals on the top or bottom?... Brandon is the CAT guy there. They installed and setup my M8 and I remember them telling me they tried lots of combos until they found what is responsive, and still has good lifespan.
1 (250) 835-2001 is the shop number.
I called boondocker to see what the suggested and the sent me Tony Doukas race reeds. There hyper tension epoxy fiber. Each reed has 2 pedals and there at least 2 times thicker then factory m8 reeds. I love theses. They feel nice and crisp. I recommend them.
I to chsnged my stock 1000 reeds out last year and used Tony Doukas reeds and have had no issues. Do not have a turbo but that is what dealer recommended, seem very crisp and no issues after these were put in.