kicker L7 by far is better just make sure you get a good amp. Get a mono amp and a class d as well try getting the Kx600.1 kicker amp that'll knock that L7
I disagree... Kicker does make great car audio but they just can't beat JL. Id go with the W6 unless your talking about the old model. But the W6v2 I think with the right box built to specs off the site and a JL audio 250/1 amp should sound awesome! I'm not saying Kicker isn't good. I'm just biased twards JL Audio because I have a 12W7 and I know how hard it hits.
What kind of sound do you want? Loud and Pounding or Crisp and Clean?
The Kicker is louder than the W6 and the W6v2 but it could never match the sound quality of a W6. The W6's are loud but not pounding but have a very nice sound.