They're fine. Not great, but they have only made me sad I ate there once, when I foolishly ordered "pulled pork" thinking they were trying to translate carnitas. They were not. It was like southern barbecue pulled pork, the burrito was awful, and I wanted to sob my way back to California.
If you aren't from California, I'm sure the selection of meats and toppings is pleasing. If you grew up eating Mission Burritos IN the Mission, don't go here. The basic chicken is fine but not really anything like back home; I think it is literally JUST baked chicken, not seasoned. I don't know why I have to wait for my burrito to be grilled in this city, but apparently it's necessary. I have gone here because they were close to work and had a moderately less racist logo than other nearby options. I don't think I'm giving them a third chance.
Service: average. Nothing amazing but no complaints.
Food: average. Nothing amazing. Not authentic, but it doesn't taste BAD if you know what you're ordering. The refried beans are actually decent.
Price: average. No more than other burrito options in this city. The Big burrito (= small burrito from El Faro/El Farolito in SF) is fairly filling, but you won't go into a food coma or anything.