It is way better than Chipotle's. They offer black beans and pinto beans (the pinto beans at Chipotle's has ham in it, so if you are a true vegetarian, Moe's is a better place if you like pinto beans over black beans).
Like another poster said, it is like the subway of taco, burrito places. Offer more stuff in their tacos and burrito's than Chipotle's. Also, they are cheaper as chips actually come with their stuff, unlike Chipotles. More families than Chipotle's (which when I went was alot of teens, college kids who seem to have given it a more party feel to it).