Depends on what you're listening to. ported is better for hip hop and bass heavy tracks. Sealed is better tighter bass (drums, bass guitar, rock music)

I've got a sealed 15" kicker box in my trunk. Sounds pretty good with all types of music. It's powered by a phoenix gold 400 watt class D amp.

hope this helps.

post the type of music you normally listen to, and that might help steer you in the right direction.

-B

p.s. check my sig.