I seriously think that covering songs within the genre of music you play is pretty pointless. What is the point of a punk band covering a punk song, a metal band covering a metal song, or a pop singer covering a pop song? There is no point. All your doing is using your voice, or different guitars, but youre not changing the song at all, youre not offering anything new. Jimi Hendrix covering Bob Dylan (All along the watchtower); now that is a cover. Hendrix's style was completely different from Dylan's thus ending up in an excellent cover song (of course having to do with its execution). If you are going to cover a song, don't pick a song that is within your style. It isn't going to be impressive, it's not going to be groundbreaking, it's not going to be unique. I've noticed people covering Opeth songs on this forum. I don't have a problem with that, its just some fun thing to do, if you play guitar or whatever. But it generally annoys me at concerts really, to see people covering songs within their own genre. Who are they trying to impress? It's been done before, probably better. Please, just stop.