Aces, I have a multiple sets of both limbs. I much prefer the C1 limbs over the black max limbs. The C1 limbs are definitely heavier, built like a tank, very smooth drawing and whisper quiet when tuned. As such, they like some mass and weight in the riser (can be easily added with a weighty stabilizer if needed). C1 limbs require some attention to the release because they are so laterally stable. I can’t imagine twisting those limbs. The C1 limbs are also very accurate if you do your part. There really is not a lot to say about the black max limb. They are lighter, probably a bit faster pound for pound and not as smooth drawing as the C1. Both are good solid limbs. As you can tell, I much prefer the Nika limbs and they can be ordered with no graphics if you hunt or just prefer them that way. Other opinions may differ.