These guys imo are just interesting. None of them lived to see 60 (Be safe Eddie), all of them ridden with depression and substance abuse problems.. Despite being millionaires and huge celebrities. And they all had incredible voices, and tons of personality. So, the nominees Kurt Cobain (Nirvana) Layne Staley (Alice in Chains) Chris Cornell (Soundgarden) Eddie Vedder (Pearl Jam) My vote goes to Cobain. Dude had a crazy unique and powerful voice. He's also the only singer on the list that also had to play an instrument in every song, and did all the writinf. Granted, because of this, Nirvana doesn't have near the composition skills and musical depth these other bands have.. But strictly talking singers I do believe he was one of the best to ever do it.