Yeah I can give you some advice Pony... Unless you are ready to lay down some serious cash for some good MB quarts (i.e 800-1000 dollars) don't waste your time with them. Even the cheaper Bostons blow them out of the water and there are way less warranty issues with them. W7's are nice, but again way overrated, and unless you got the cash for a large amp to drive them, are also a waste of money.