ahh, gaz. what a guy.
to answer the ''question'' i think Jon was at his peak mid 90's on the cross road/these days tour live. loved the whole band image back then, not an air brush in sight.
but i guess nothing beats Jons voice from the NJ era, like i have a bootleg of Blood on Blood live, a 9min 45secs epic version and Jon (and richie backing vocals) are on fire
andi