Season 1- Sonic Rainboom
Best episode by far... Just my opinion. Anyways, I thought it was really funny and had a great lesson.
Season 2- Canterlot Wedding
I thought Chrysalis was a great villain, and the plot was amazing. I also liked the song.
Season 3- Magical Mystery Cure
I have my reasons, k?
Season 4- Twilights Kingdom
I liked the twilight/Tirek fight scene. It shows that the show isn't only friendship and rainbows. It was also very interesting.
Season 5- Cutie Remark
It was a great plot, and I also liked some of the alternate realms.