Yes, well, car audio is like that. It's a crappy reflective environment with a ton of noise. Even with a year spent deadening with thousands of dollars of parts and materials, you'll still have at least 60 db of noise at cruise. A pair of $200 in-ear monitors will sound infinitely better and will not damage your ears. So...with car audio...turn it up, get (some of) the details, live fast, die young. Or don't, and you will not hear as much on the quieter passages.So, when the folks in here are talking about, "detail" they are talking about quiet, subtle sounds that are being drowned out by the road noise and engine noise during driving. The only know way to recover these lost details in the sound and make them audible is to lower those noises as far as possible. Even 1db of noise reduced will be perceived as a gain in detail and quality to a finicky listener. I plan to fight for every decibel I can get back!
But lack of details is not really the issue, as far as speaker selection. You don't get more or less detail out of different speakers; you get more or less resonances and distortion. MS8 takes care of the former, but not the latter.