when I got my car all the stereo settings were default...and I spent ages trying to get the sound just right...
I don't know how anyone else sets up their sound systems but I set up my fader/enhancement/etc settings by using this song
...as it has a bit of everything...vocals, sweeping crecendo, light sections, heavy sections and wonderful depth of tone
...I found that adjusting the setting to a heavy rock song, such as Soundgardens version of rusty cage, made pop songs sound too dull
and setting to a dance track, like titanium,david guetta, made folk/country/metal sound all tinny
...once
this song sounds epic, and gives you chills, most others do too

well...that's what I've discovered anyway