Dorian Yates, Ronnie Coleman - two of the most muscular bodybuilders out there, and in your opinion, the most impressive physiques ever. Hence, the same opinion as Jay Cutler vs. Phil Heath in the 2010 Olympia.
While these are the huge mass monsters, a lot of people prefer the symmetry, as it was when Flex Wheeler and Shawn Ray were competing. One of the most impressive physiques to me was 10+ years ago, when Flex Wheeler was in the Olympia, look amazing, and perhaps, should of won the Olympia.