1. Davis Bowie
2. Lou Reed
3. Bryan Ferry or Paul Weller

1. Sinéad Quinn
2. Malachi Cush
3. Avril Lavigne
4. R Kelly
5. Nivea
6. Ainslie Henderson
7. Christina Aguilera

*sorry i couldnt stick to 3!*

Not sure on a top 3 right now, but I am surprised that nobody mentioned Freddie Mercury!!

Edit: Hmm thought this post was on quality of voice, but not sure now