I love, love, love Super Burrito. Their prices are a little higher than the average burrito place, but the burritos are HUGE. I often joke that the burritos are larger than my daughter was when she was born.
They have burritos with any imaginable fillings, fast service, fast food environment with local feel, and a REALLY full tummy after you're done!
Super Burrito is a Reno must eat.