Towers of London are a joke. I accidentally ended up at a gig of theirs (don't ask) - it was hilarious for all of 3 minutes. Then it got old, and I realised they were taking themselves seriously.
I recently got into Mastodon, however, despite not generally listening to much heavy stuff, and they rock.
I've not got much else in the way of suggestions right now, though, without any more specific details about what you want.