You're familiar with Chipolte, right? Ok so now we have that covered, each restaurant that tries to be Chipolte will be compared to Chipolte.
El Guero is not bad by any means. Skip the Burrito Bowl (my Chipolte fave) and stick to the actual burrito. There is a lack of creativity to set it apart from other restaurants with the same business model. It's good, but it's all been done before. Guacamole on the side with chips was average.
Best of all however, it's right downtown within walking distance of my apartment. It's a little more expensive than Chipolte but that's the downtown premium.
I'd give any Chipolte a 4 for their food, and this place is a notch below. Earns a respectable 3 star rating.