the rebels are a bit more aggressive, more focused(becuase of the alnico V), they definetly have that "stadium rock" sound to them, whereas the mules I have are more Slashy, darker and a little less output in the bridge. The Yells are in a Peavey wolfgang, whereas the PRS with the mules I can adjust the height, I've got them pretty low just to see what they sound like, they are so clear...The rebels clean up amazing, they are more of a modern rock pickup whereas the mules are very vintagey... both are amazing pickups...