Shameless rip of a great, other thread.
Was just reading the Gil Kane collection. "Behold Ultimate Man!" has to be the epitome of the era to me. Pitch perfect character of Superman and a supreme density of adventure. Feat after feat, including a few consecutively clever tweaks to a certain physics breaking trope. The dynamic design sense of Gil Kane extended to suit his plotting and vocabulary, and I really think he was his own best writer because of that.
Ultimate Man was an enjoyable one off villain. It was a rather potent narrative about the priority of power without really being blatant or heavy handed. And it costarred a guy who evolved himself by ten million years and tapped into the mind of every human on earth as a warm up. I will say that the benefit of Superman being the greatest is that in his stories, you have no obligation to the other heroes and villains in regards to the primary conflict of the story. Way above them like that, he may as well be the only hero in his universe.