Layne Staley doesn't get enough love due to the way he died. It was one long drawn out addiction that saw him go years without performing. Whereas Cobain, Cornell, Weiland all seemed "abrupt" due to them being public figures. Layne may have had the best vocals of them all, enjoy the pre-Nevermind performance!
Edit: also don't do drugs kids, the story of Layne's last few years is really sad.