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

IMO you need to break this down into two categories. First would be as the “front man” and second would be actual vocal talent. Front man you have to go with David Lee Roth
vocal talent is more difficult as they all use so many effects even I could sound good. I do like Geoff Tate Queensryche and Jack Russell Great White.

Maybe we should do this like the pros and break it down by year. So many worthy candidates! How many years can we cover?

For my David Byrne vote I would designate that from 1977-1985.  A pretty good run!

mcslipp
While I might agree that Van Halen had more good songs with David Lee Roth than with Sammy, I think their two best songs are Dreams and Right Now (with Jump a close third), both with Sammy. Also, Roth is not really a good singer and he's the Jim Carrey of rock stars (overdoes everything). 

roberjerman
Kiss sucks.

I think Freddie was the best front man ever and to me, that made him the most valuable.

Freddie Mercury 1975-1981. 

Leon Russell