Rainbow Dash is my favorite character, and even I have to say, I loved the way she was portrayed in Rainbow Rocks. It makes sense. She made the band, presumabely made it too. Then the rest of her 'friends' say that Twilight should get the two positions that Dash does for the band?
Yeah, great friends. They were all really selfish. Dash honestly deserves to be egotistical. She's awesome, and just wants others to know how awesome she is. There's a huge difference between pride and stubborness, and Dash exemplified pride.