Lol, touche
You say Plant sounds gay - but what about ozzy? He can't even sing in tune!
Between 69 and 77 Zeppelin were untouchable. After that Plant lost his voice, Page turned into a hermit, Jones fucked off and Bonham died. But while they lasted they were the Kings of rock. [like Manowar are the Kings of Metal]
I have evey Dio album, and the only one thats 'difficult' is Angry Machines.
Even you must admit Ozzys solo work is pathetic. Have you seen his updated version of chnges with kelly