Serge Nubret was awesome, and wasn't he just off 40 when he went up against Arnie in the 'Pumping Iron' Olympia.
I'm not sure if I really buy the Shawn Ray and Lee Priest claims. I just don't think that they are as proportioned as they claim, they always look blocky to me, just mini-Dorians/Colemans. Its hard for a short guy to carry mass and still look graceful. Thats why Arnie always beat Columbo, not just because he was weighed more.
Of the moderns I rate Levrone, ripped, big, proportioned and keeps some poise- no shredded pot-belly in sight.