deinol , 
I decided to revisit some classic sci-fi authors. I read a lot of Asimov and Heinlein ages 12-22 or so. But it’s been over twenty years now.
Instead of finding the best of I picked the old fashioned way, randomly from what was at my local used book store.
I would have grabbed the original Foundation trilogy had they been there, but only Prelude and Second Foundation were on the shelf.