According to cool fan site Spider-Friends.com ...

the 4 best episodes of "Spider-Man and His Amazing Friends" are "Triumph of the Green Goblin" (average rating of 3.83 stars from three reviewers who each could give an episode a maximum of 4 stars), "7 Little Superheroes" (3.67 average rating), "Along Came Spidey" (3.67 average rating), and "A Firestar Is Born" (3.50 average rating). According to the same people, the 4 worst episodes are "The Education of a Superhero" (1.00 average rating), "Spidey Meets the Girl from Tomorrow" (1.67 average rating), "The Prison Plot" (1.67 average rating), and "The Transylvanian Connection" (2.33 average rating). I noticed that seasons 1 & 2 of this series each contributed 2 of the highest rated episodes while the 3rd and final season contributed all but one of the lowest rated episodes (with that other being from season 1).