Well, a lot of older Superman stories after the 40's just dont age well. I love the cosmic explorer, super scientist concepts of the Silver Age but the stories themselves are often too weird or bland or just too dated for my personal tastes. And it seems that a lot of the best moments happen in other books; Jimmy Olsen or Lois Lane.
Then we come to the Bronze Age, and that's where we start to reference Moore, who overshadows everyone, and then we're into post-Crisis.
You know the history pretty well, what would *you* recommend? What nuggets are hidden in the mass of the Silver Age that are hard to find and dig out?