way too many factors here to tell you an answer. I have always been a sealed and 4th order fan, becasuse I never cared about metereing or how loud the system got. That also doesnt mean that a good sealed box cant get loud. This was years ago, but I worked with a guy that had 6 sealed 10" solobarics. All subs faced up in his trunk. A few other guys we worked with were louder with their ported systems, but most couldnt play as low or sound as good as he did it. He basically had an sq system that could get loud. I have been in punishing ported systems with one or two subs on crazy power and electrical, but it all boils down to your goals, how much trunk you are willing to give up, and power and electrical on tap.