2 stars = Meh. I've experienced better. Fact is I've experienced WAY better.
Z-teca gets 2 stars because the ingredients seem very fresh and for burritos they do press/grill them at the end (a technique sadly missed at many burrito joints).
Other than that the actual flavours are lacking all around. As my husband calls it, there's an overriding 'tang' that can't be ignored and sours the rest of the dish. I went for a chicken burrito bowl yesterday and although I left feeling light (these aren't the one pounders you get elsewhere), I still highly regretted my lunch decision.
Go to Burrito Bandidos.