1) Twilight's Kingdom: Tirek is my favourite villain from the entire show, the songs were wonderful, and I love Discord's second redemption- I absolutely love everything about this story.
2) Crusaders of the Lost Mark: One of those rare episodes that actually made me cry, the redemption of Diamond Tiara, the fantastic songs and the CMCs getting their Cutie Marks all make this one of the best episodes of the show.
3) The Last Problem: A beautiful conclusion to the series, once again has a great song, and the ending is possibly my favourite moment in the entire show.
4) Frenemies: Just a fun episode that focuses on some of my favourite characters while also progressing the story and setting up The Ending of the End, and like the other episodes on this list, it has a really good song.
5) Best Gift Ever: I have a weakness for holiday specials, and this is (in my opinion) the best holiday special of the show. Again, it has great songs, a wholesome/sweet story and is just an all-round good episode.