My personal favourite is Reeves. I'm in awe at his V-Taper, his tiny waist, his "squared-off chest" & his huge arms, shoulders, quads & his diamond calves.
It's amazing to me that these two were competing at the same time because, to me, their physiques are totally different. They ate differently from one another & also trained differently from one another.
Reeves' physique is very athletic like compared to Park's hardcore body. Both are equally impressive & will be for all time, but personally, for me, it's Reeves.