Trek #7 published a fan poll on various subjects including best episodes. It was reprinted in
The Best of Trek in April 1978. The results were:
1. The City on the Edge of Forever
2. Amok Time
3. Journey to Babel
4. The Menagerie
5. The Trouble with Tribbles
6. Shore Leave
7. Balance of Terror
8. The Enemy Within
9. The Naked Time
10. Mirror, Mirror