Bandpass and ported enclosures will give you more SPL, but they sometimes have a "peaky" response that can be hard to tune. Bandpass enclosures also have a boomy sound to them. They take up a lot of space too
Sealed boxes are easier to build and use up less space. They are known for that tight bottom end with no boomieness. Usually produce a much flatter response as well.
Bottom line...if you're lookin' to go "boomin down da block" go with the ported...if you want a nice, tight, response with accurate reproduction of the bass go with a sealed.