You can Vote for Most Valuable Lead Vocals (Rock Groups)

Johnette Napolitano- Concrete Blonde.

Amy Lee- Evanescence.

Right! Can't forget the ladies....

@mapman 
Map, check out Talking Heads 'Big Business/I Zimbra' live 1983 on YouTube if you've not already.
Classic David Byrne at his best!

Kind of surprised that Ann Wilson hasn’t been mentioned. But, I kinda hafta agree with the Chrissie Hynde vote. No Chrissie, no Pretenders. 

mapman has a screw loose saying Colllins over Gabriel. Genesis is never Genesis without Gabriel. Simply put, a unique individual whom brought fame to a group that Collins rode home to the bank. Roger Daltry is symbolic as MVP vocalist. Robert Plant is not far behind. Ahead of them all is Natalie Merchant. There is no 10,000 Maniacs without her!

I didn’t say Collins over Gabriel.   Only that Gabriel was replaced and the group went on to even greater fame works against Gabriel as Genesis MVP.  MVPs are not easily replaced.  
In fact when Collins left and they gave Ray Wilson, a fine vocalist on his own right, a go, that was it for Genesis. 
So there is a case to be made for Phil Collins as an MVP with Genesis.