Bingo!!!!!! Great post! Audio, whether it is home or automobile is always the subject of debate. Everyone has their own opinions on what sounds best to them. A perfect example is Mirage home audio. I love the omnipolar sound, but realize that most people prefer direct radiating speakers. You simply cannot compare home audio speakers to car audio speakers. Your home setup is in a controlled environment and your speakers are in controlled closures made to the manufacturers specs. Car audio has to be versatile. My preference given the two speakers you named above is hands down the MB Quart. While JL makes phenominal subs, I do not like their speakers. MB Quart is the opposite. I do not like the MB Quart subs and never have. Have you looked at any other brands such as Focal? Just go into a shop and listen to the different speakers on the same setup. I can assure you that you will immediately have a preference of one over the other. Do not take anyone else's opinions on which speaker sounds best. It's a huge mistake.