Yeah, Tom's vocals are the only thing I like about Slayer. But I don't know if I'd put any thrash vocalist in my Top 10 metal vocalists. Hell, even 20. But that's probably because I base things like top vocalists, guitarists, bassists, etc purely on techincal ability.
4/20 Thou/Cloud Rat
4/26 Circle Takes The Square/Loma Prieta/leer.