I just watched Rainbow Rocks for the first time today. I already thought the first one was not bad, but the second one was even better. Sunset Shimmer is a better character as a protagonist than an antagonist if you ask me, the Dazzlings made for more interesting villains, the songs are great (as to be expected from MLP at this point), and I felt like most of the main cast got more even amounts of screentime (plus the fandom nods were cool too, like Lyra and Bon Bon being a duo, and Vinyl Scratch has a mobile sound system/turntable that basically made me think of the BASS CANNON from the fan made short).