The EQ should not be set to make a particular song/genre sound "better" but rather should be set to reproduce sound accurately. When that happens, you hear how the song was meant to sound. Trying to fit the EQ to a variety of tastes in music is just pointless.
PencilGeek's thread is a good starting point, as he actually measured sound levels, etc. http://www.m3post.com/forums/showthread.php?t=137825
2015 SO/SO MT M3 :: Exec : Lighting : Adaptive : HK : CF trim : Full leather : DAP : Black 19's : sunshade
Crystalline tint 40%/70% on windshield : M performance CF mirrors/spoiler : RKP diffuser
Dechromed with gloss black badge, grilles, side markers
V1 Savvy hardwired : Self-coded, will code locally for beer or food