text: Northern Arizona University is in Flagstaff; University of Arizona is in Tucson.  The only thing I know about Tucson is that it is hot, hot, hot.  Flagstaff is actually a very nice town, if you can afford it.  I've been to the campus of Northern Arizona U., and it is a pleasant place.  I know nothing of the academic programs of U. Arizona, but I saw the catalog of Northern Az. U., and it looked pretty interesting to me.  I'd vote for NAU.  (And don't forget the Lowell Observatory is in Flagstaff; fascinating!)