Quote Originally Posted by kexodusc
To be fair here, to say one design is "better" depends on its intended purpose, and what you're looking for. But don't discount the very large differences created by this design choice. All other things kept equal, a ported and sealed sub will have very different properties. Depending on the intended use, performance expectations, and budget, one would be better than the other.
I respectfully disagree. I am of the opinion that good subs exist from both design types, and purchases should be dictated by price and loudness/lowness capabilities.

"All things being equal" (meaning same box, same amp, same driver) a ported sub will play lower and louder than a sealed sub. But of course, all things are never equal. The important design considerations are low frequency response and SPL capability (and of course, price).

-Adam