You saw Leprous! Now you got me jealous. I saw Opeth once too, but that's a bit too slow for me, I do need a bit fast death haha. Ayreon is pretty awesome indeed, and not very often on stage. I was lucky enough to see him once playing acoustic in a record store, but no real shows. I like Star One too indeed, but all his projects to be honest. From your list Motorhead and Stone Sour, went to many concerts of those... especially grateful to have seen Lemmy before the legend was out. We should go to a show together once!