I am planning on buying an 05 V8 Limited with navigation. I've test driven one and in my opinion the stereo sounds like the speakers are firing through pillows. What I am looking for in a stereo is accurate and precise music and voice reproduction. I want the stereo to sound like I'm listening to live music or speach, not like it's coming out of speakers. I don't listen at loud levels and I don't like loud base, although I do like tight accurate base. Does anyone know if replacing all the speakers in the car with some quality speakers, like MB Quart Q-Line speakers, will get me accurate precise music and voice reproduction at low to medium sound levels out of the stock head unit and amp?