As far as the corpus of my Taco Bell knowledge goes, this is the only smaller burrito with beef and rice* (It also has crunchy chips in it). By the way, when I say, "my Taco Bell knowledge", I'm essentially saying, "All existing Taco Bell knowledge on the planet", but who knows, Taco Bell CEO Greg Creed might be able to throw a few curveballs by me.
Anyway, that unique crew of ingredients is enough to make the "volcano version", which is generally a not-so-exciting upgrade, mucho worth it for this gem. It's got texture, it's got heat, it's got panache, it's got vivacity , it's got dynamism, it's got truculence, I have a thesaurus.
It's one of the best small sized burrito TB can give you, pinky swear.
(*Note: No longer true as of June 9th, 2014 with the release of the Quesarito)