First of all congratulations dltwlf18! You are accepted by three amazing MA programs and yours seems to be a difficult decision to make right now. I applied to MA programs at Harvard, Princeton and UT Austin, and unfortunately got rejections from three of them. Of course Harvard is a super brand, but if you think academically, I believe that UT Austin and Chicago are much better choices. One of my professors, who did her PhD at Harvard, told me that for Middle East and Sociology Chicago is the best in the US. I am angry with myself that I fell for Harvard's name and not applied to Chicago, but I will certainly apply for PhD at U Chicago next time.
About UT Austin I can say that I spent there five weeks in summer 2010 and liked it there a lot! The program I attended was in LBJ School of Public Affairs, however I got in contact with several faculty members at both Middle Eastern Studies and Sociology Department. The university is really very cool and faculty members are so lovely. Also I need to say that Austin is a very liberal city, which I have never expected at all before I went there. I agree with others that UT Austin has a quite good Middle Eastern Studies language education and modern Middle East curriculum. While I was applying to these three programs, UT Austin was my top choice. However, after my discussion with the professor, I would recommend you U Chicago over both Harvard and UT Austin (unless you consider weather conditions ). Anyway I wish you best of luck with the decision, all of them are indeed great programs.