@Mr. Ghostman Agree. While Sunset isn't a bad character, I like Glimmer and her process of reformation more than Sunset's, since Star's is slow and difficult, while Sun's was fast and easy, though it helped that Sun was a terrible and weak villain while Glimmer a great one.
Sunset lost all traces of her old personality after the first movie and has never ONCE backslid in any way. Starlight's reformation, on the other hand, has been full of bumps and missteps, and is all the better for it.
@hakirayleigh I won't fight you on that. Her sudden reformation, even if I love it for being only one of two where the villain steps down while they were winning, is sudden, and her backstory/reason was weak at best.
I like both Starlight and Sunset to be honest. Starlight was a bit of a hit or miss at the beginning but in the recent season she's a lot more tolerable and more emotionally sympathetic to other characters. It's a shame that Sunset technically isn't canon since she hasn't appeared outside of Equestria Girls yet.