Ok, I'm going to step into it now.... · 4:44am Dec 31st, 2016
Sunset Shimmer is not best pony.
*dodges flung items* Let me finish!
She is not best pony because we see her for all of three minutes as a pony. Now if we had her return to Equestria for any length of canonical time, then yes, she would be best pony on my list.
She is currently best character by growth, followed closely now by Starlight Glimmer as of the end of season six.
Sigh...I said I wasn't going to do this....dammit.
Sunset Shimmer
DJ Pon-3
Luna
Applejack
Fluttershy