sound system suggestions

[gm830]

i really know nothing about what equipment is good for what...I just want my music to sound really nice even when the volume is up really loud (fyi i'm not the type that makes it so the whole neighborhood has to hear your music as you're driving through lol). I'm not looking for a lot of bass, i really hate it when i'm in my brother's car because all you here is tons of bass vibrating everything and you can barely hear the music (i'm not sure i'd call what he listens to "music" though =P ) I mainly like rock and pop music so bass isn't a focus, i just want clear sounding music, anyone know what type of speakers are best?