Couldn't tell you never played my music loud enough to notice, I enjoy my music variety of all kinds wouldn't say I'm an audiophile though, it honestly depends how you're going to be playing the music.
Personally I prefer to add sound deadening and increase the quality of the music before going to audio components as it's cheaper.
{side note added sound deadening to under the bonnet and in the spare wheel well of my mk5 polo (very very similar just a bit smaller) and I can't drive other polos because mines far far quieter and it annoys me}