They are all super duper amazing!
I really like them all! Like, life is a runway got a nice classy/pop styled beat, Tabithas voice fits it amazingly well. And I really like the different dresses
Then there's Friendship through ages, which I also really like, cause they basiclly sing to Sunset and explains how awesome firendship is, with their own (and to me) fitting styles, I find piano a way more fitting instrument to Twilight than singing.
And then the last one, amazing! Sunset sings about her past, and of how she's moving on from the dark times with her new friends! And I really like how they use the word pheonix, since her talent seems to be fire magic related, and because of her color scheme, that creature fits her. She is rising from the ashes to help spreading the magic of friendship!