The problem with all of this is Pearl Jam and Soundgarden. Pearl Jam with the way they recycle the Who crossed with a smattering of UFO/Kiss/Zeppelin - they are undeniably an amazing live band - and Soundgarden with the beauty and genius that was Chris Cornell. Even without the tragedy of his death, I think 40 years from now we're going to look back at Cornell in the same way we look at, say, Deep Purple, or The Doors.
But for those two, this isn't even a conversation in my opinion.