both are 1500 grit polished but the rg and diff. are different[rg 2.49 vs 2.55 diff. .040 vs .55],on the other hand the thing i noticed the most is the position the flip block on the power charge it is on the bottom and for the apocalyspe it is on the top.so the question here is which do you prefer i am leaning towards the apocalyspe because i seem to have better results when the flip block is on the top of the core vs on the bottom.
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