For a long time, Burrito Boyz was the place to get top notice burritos. Then Chipotle came along and that's all you heard about. I had an opportunity to eat at BB recently and the value and quality is still one of the best.
I typically get a mix of steak and sweet potato. I love the addition of sweet potato (some may find it makes the burrito mushy) and the chewiness of steak. A large literally gets you 2+ lbs of food. It's enormous and I don't know how I use to eat it myself. Nowadays I get a burrito bowl with the pita on the side so it's a little more manageable (and less messy) to eat.
Altogether whichever location you go to, I think this is still a go to place for a good burrito!