Mangia is still king, but if you'd like something a little different with some east coast influence, try out Rounders. I can't believe I've been in Austin so long without tasting it. The place definitely has a unique atmosphere for a pizza place - dark, quiet, cozy, putting the spotlight on the pizza (which is terrific). I'd put Rounders in a tie with Mangia for best in Austin. They complement each other very well.
Pros: the pizza, dummy, cozy atmosphere
Cons: parking
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