Orangedonkey,
Wow, you have a lot of really great schools from which to choose...congrats! Regarding the reputation of UT-Austin, the LBJ School definitely carries significant recognition and prestige, even amongst the DC- and NYC-area schools you mentioned below. The school is ranked in the top ten--#9 I believe--of public policy institutions.
Granted, there is a tradeoff when going to a school outside of the supposed "hubs" of public policy. However, the faculty at UT-Austin is very well connected with folks from the DC scene, and you would be surprised at how many multinational and domestic organizations and corporations are headquartered in Texas, particularly in Dallas and Houston and a fair amount in Austin and San Antonio. Most of the people that I know who moved to Austin for school ended up staying there not because they had to, but because they wanted to. It is such a wonderful place to live with plenty of employment opportunities (after all, it is the capital of the 2nd largest state in the US) and a lovely pace of life that many elect to stay for a while after school. From what I understand, though, many LBJ graduates do leave Texas to go work in the larger markets or abroad.
I'm not sure what your interests are, but UT stood out to me because of the breadth of options graduate students have for electives and focus. The LBJ SChool will allow you to take electives in other departments throughout the university if you so desire. Thus, if you are interested in natural resource policy, for example, you may take classes in geology and other natural sciences in order to hone your expertise in the field outside of the policy perspective. I like this flexibility in the ciriculum, and none of the other schools that I am considering offer this option.
Also, something must be said about the enormous alumni network that comes out of UT-Austin and the LBJ School...it is ENORMOUS. While the LBJ School boasts 2700 +/- alumni, the entire university counts on hundreds of thousands of alumni, which are very active and spread all over the world. Graduates of UT tend to have this neat sense of camaraderie, no matter the discipline, and look out for their own, so to speak. I mention this because, clearly, the alumni network is key to future employment. I am from the South, and the UT pride is notorious.
I hope some of this helps! We all have 2 weeks to determine our own fate...best of luck to everyone!