I love the "Sisterhooves Social" episode. It really focused on the relationship between Rarity and Sweetie Belle, and the relationship between Applejack and Apple Bloom.
I think Sweetie Belle is the cutest filly I've ever seen in my life. I found myself really rooting for her. I could tell that she's not a bad filly, but she was just trying to help. Too bad she is rather clumsy, ignorant, and too young to realize that there is no way to please someone with Obsessive-Compulsive Disorder.
I thought it was pretty funny how Apple Bloom perfectly demonstrated the concept of "uncouth" with practically swallowing apples, belching, spitting up pieces of apple, and talking with her mouth full. It really goes a long way to show contrast between SB and AB. Now, if only Scootaloo was given contrast between the two....
While it might seem disproportionate for Rarity and SW to disown each other over going to a social, it's important to remember that Rarity is a
Drama Queen...and so is SW. At least they made it up to each other at the end. Also, having Spike at the end to mediate a brewing argument between the two didn't hurt either!