Besides who can resist

I thought that the idea of the CMC was kind of overly cutesy at first, but over time the characters grew on me.

If I had to choose a favorite, I'd probably pick Applebloom. Not to diss Scootaloo or Sweetie Belle, but Applebloom's the first one of them that I really got the chance to know and appreciate as a character in her own right. Then again, Scootaloo has her own episode coming up, so that may be subject to change.