Ported or sealed.

the weakest system ive ever heard was 2 JLW6V2 10"s. my first system i ever had would put that to shame. and it was 2 pioneer 12"s and a sony amp....hahaha. JL is overpriced and overrated.

Not to be a jerk here - but JL makes good woofers. It makes little to no sense to compare different setups in different cars. My hunch is that most of the negative experiences were related to enclosure and/or installation issues. On the sealed / ported question.... this choice might be part of the problem. I think too many people just pick one because of some one-liner they hear from their friends, "ported hits harder." They don't take the time to realize that poorly executed, i.e. slammed into too small of a box, a high tuning frequency can destroy low frequency extension. That said, Jeff is right, if max output is a concern for you, then go ported. BUT DO IT RIGHT. Download some enclosure modeling software and carefully follow the volume and more importanty port specifications on the design you choose. You can then easily compare the estimated frequency response curve to a sealed box for the same driver. These programs can't estimate distortion or transient response, but they'll give you an idea about what to expect the frequency response to look like. New Project: 2003 Pathfinder

Once u go ported u'll never go back to anything else!