I didn't care for this place and will not return if I find myself in PHX.
The staff members were cold and unhelpful. When I asked the server whether they have brown rice and black beans, she rolled her eyes and said "we're not Chipotle. We only have Mexican rice and whole beans." A "sorry, but we don't carry those" would've been a better move. Also I ordered my chicken bowl with a reduced portion of rice but ended up with mostly rice in my bowl.
The food tasted alright but the portions were quite small. Prod your fork into the seemingly large bowl and you'll be disappointed to hit bedrock after a 1/2 inch - there's not much food in the bowl at all. I saw them portioning chicken and it couldn't have been more than 1/3 cup. I had to actually go to another restaurant for a 2nd dinner I was still so hungry after America's Taco Shop.