The Kilomax 15 has an edge over the Omega 15 when used above a couple hundred watts. At high power levels, the Kilomax is more robust and doesn't shift electro-mechanical parameters as much. At lower power levels, I prefer the Omega though.In either case, the JBL 2226 is a better driver having a shorting ring in the motor to reduce distortion. The midbass and lower midrange is clearer as a result. The Eminence woofers sound nice, to me they're better sounding than any other traditional ferrite woofers. But I can really hear the difference in the JBL's with their shorting rings. The harmonics generated from bass and midbass fall squarely in the midrange and that's the most noticeable range for them to be.