I'm surprised no has mentioned Peter Gabriel, Phil Collins, or Bono yet.

I like both Bono and Gabriel, but I never really thought of them as powerful vocalists (although Bono has his moments).

I have always detested Phil Collins, though, from the moment he thought he could take Gabriel's place in Genesis with A Trick Of The Tail. I never enjoyed a single Genesis album after Lamb Lies Down (although some -- like Duke -- were better than others -- like Invisible Touch).