Except for the folkie-folks who can't get past his voice, Neil Young is the obvious No. 1. The breadth of his catalog alone dwarfs the other three guys combined, even if he's given us quite a bit of chaff with the wheat, and he continues to push the envelope while the other three are essentially resting on their laurels. But how about those other three guys? All were members of important bands before CSNY came to be -- Stephen Stills in Buffalo Springfield, David Crosby in the Byrds, Graham Nash in the Hollies. For me, fourth place is pretty easy -- it's Nash, Marrakesh Express and Our House not withstanding. So it's between Stills and Crosby for me. I have to go Stills -- a great instrumentalist and he wrote more of the group's iconic songs. but maybe someone has a different take. So I have to go 1. Young. 2. Stills. 3. Crosby. 4. Nash. If there's any room for movement, it may be between Crosby and Nash. The irony is 2-3-4 worked so well without 1. When Young sings with the band, he sings Neil Young songs. Heck, Helpless seamlessly could have been on any of his early solo albums, and was on Decade. Other than some nifty contributory guitar work, Young has little of the alchemy that the other three guys obviously possess. Can you imagine this band if it would have been Gene Clark instead of Nash or Crosby? Then again, we might not have gotten those luscious harmonies.