You never see much of any JL in the lanes, JL has an average consumer target market and in no way is geared toward producing raw SPL. Kicker's whole market strategy with the square line is to enhance SPL with their square design, i doubt anyone smart would say a square kicker would keep up with a JL of the same category in SQ. and you don't see kicker saying it either. all they say is LOUDER LOUDER LOUDER!!! They are Geared at more toward SPL than JL's and do have advantages in that department....