OK, its not an album cover or press shoot, but I thought Immortal needed to be mentioned here. We can all agree that there has been more than one occasion where Immortal just look ridiculous, but we over look it because the music is so good, and as a whole package, image and all, it works. The difference between the Xasthur and Graveland pictures is not the message in the image, its the musical strength to back up the image. Cleverly writing overly biased interpretations of the message in their press shoots is convincing initially, but it will only take you so far. I think the reason Rob Darken's picture is more impressive, is because his musical career is so much more impressive.
4.actual views and personality of musician
5.press shoots/band image
Whilst you can take all these as one artistic product, it is possible to rank them in order of importance.