It's been a long time since I've been back to Ames or gone out to eat in the DSM area. I have literally forgotten what Panchero's is like. I did try it a couple of times while at ISU and at least remember liking it.
Right now, I've been choosing Qdoba, since it's closer to my house and, IMO, they have healthier options
Chipotle seems to be rather expensive to me, but it could just be me too.
I couldn't stand eating anything that came out of Flying....ahem, FIGHTING Burrito. The two times I went, i would always get the bottom-of-the-barrell leftovers that were either over-sauced, over-cooked or just plain old. I guess I just wasn't drunk enough when I went there.