I have both and in separate 2x12 cabs. I am a Bobby type player in our band and mostly use the Ks for the reasons cited above. They have a more well balanced tone to me. But, in larger venues, I use both the Ks and the Es together. I keep the Es on the bottom and mic 1 K and 1 E. Maybe due to the higher amp volumes at these places, I feel I need more of that crispy tone in there that I can get from the Es. But generally, for my style of playing (no effects, hollowbody guitar - earlier 70s type sound), I use the Ks. My own opinion, but i think Ks are the best speakers ever!