Lots of other threads on this very subject already created. Do a quick search. I can say, from first hand experience, that the SSA Evil 6.5 sound great and get loud, but, as many warned, they lack mid-bass. This was on a door what was dampened, foamed, MLV, etc and was so sealed it may as well have been a sealed enclosure....yet still just didn't give any oomph down low. I've heard the Crescendo PWX are good, but can't say yet as mine haven't come in.