A:Answer I assume you mean ported/non-ported...really depends on what kind of sound you want...for boomie, go ported...for accurate and thumpy, enclosed. But keep in mind, your amp will work harder with enclosed unless it's humongous because recoil will work against itself...but that also lends to the crisp sound. If you have to use a smaller enclosed box, stuff it with some polyfill which acts as a dampener and basically mimics a larger box.
