To add into the Rarity conversation, I have no Idea what you are talking about Yearg.

Rarities Episodes rarely have anything to do with battling against her own desires of prestige and what not.

Art of the Dress she created the dresses her friends wanted, and even stuck it through the fassion show with those designs regardless of their goofiness.

Diamond Dogs was her using her wit and charm to outsmart a bunch of creepy dog thingys.

The one with Photofinish she was Jealous that Fluttershy was the target of Photo Finish, but regardless of her Jealousy she supported Fluttershy in continuing. It was clear the whole time she supported her friend, this 'begrudgingly siding with them' never
happened once, she jumped in immidiately to cheer on Flutter shy. There was no hesitation, it was definately more an episode teaching her to be a bit more honest about her and fluttershy to be a bit more honest about their own feelings, even if you are afraid it may hurt the other persons.

The one with Rarity and her sister wasn't either, its a lot more to do with how Rarity wasn't really being a very good sister, once again any kind of Greediness wasn't much of a factor here.

The only times it was her struggling to remain a generous person was the Discord episode, which hardly counts since it was all Magic and Shenanagins, and the latest one where she was making the dress for twilight. And mind you, this situation put an insane amount of pressure on Rarity. She was in position to make a big leap forward in fulfilling her dream. In regards to fashion desing, high end design requires getting your name out there. If no one knows who you are, it is difficult to obtain high end clients, so as Shallow as getting into the in crowd may seem, if a talented Fashion designer gets into it, they are pretty much set. So this was very much an episode where it took putting Rarity's biggest dream on the line. And again, this is the only time I saw Rarity waver on the Generosity front.