Qdoba also offers a large variety of products: burritos, quesadillas, soup, and nachos. Average price of a steak burrito would be $8.40 which is significantly more costly. A small fountain drink would be $1.90. Qdoba for now only sells only in the US, but it is spreading to Canada. Although like chipotle it does sell online too.
Chipotle is the better choice to me. Although their prices might be higher than others, it has a great variety products. For example if you aren't felling the tortilla just get a bowl with all the ingredients you might put in your burrito. Also Chipotle has been around for longer and it is widely spread across the world.