Not metal, but Van Halen sans guitar work is just about the worst rock band from that era. Dave's voice is a horrible, horrible sound, their melodies like the ones in 'Beautiful Girls' are wretched and atonal, and Michael Anthony's backup vocals have one of the most stomach twisting tones I've heard.
Van Halen and AC/DC are loads of fun if you can manage not to take them so seriously.
He has a really unique voice, but from a technical perspective, he isn't a very vocally able singer. I like a lot of weird singers, but he annoys me and I wouldn't ever listen to things that he sings for that reason.
They annoy me.
It's not an issue to me either. As I said in my last post, I don't like his voice even though I like a lot of weird or non-traditional singers. My favorite truly unusual singers are David Tibet and Tom Waits.
Since most of VH's music really has nothing to do musically, lyrically, or in overall presentation with anything I consider fun or feel the atmosphere of fun from, I don't really see how what you propose would work out for me.
AC/DC is a little closer. Running Wild, Grave Digger, and some of W.A.S.P.'s stuff is perfect (for me), ya'll pretty much should realize not everybody can or wants to relate to some atmospheres or lyrics.Feeling totally stupid isn't really a prerequisite for getting in the fired up fun mode for me.