Good Post by JBrien above.
Location is one of the most important factors to consider. On top of the alumni being in that area law school doesn't exist in a vaccuum and I imagine upstate New York and Arizona are very different atmospheres and you will in those areas for a minimum of thee years. During those three years you will get an apartment, friends, a relatinship if you don't have one already, restaurants you like, and you just overall will get settled in to these places and it will be difficult to leave. I know plenty of people do, but with 100k in debt hanging over your head and with the job market the way it is you are probably going to stay local to start your career. Then you will start somewhere and your roots will be dug deeper into that location making it harder to leave. New York and Arizona are different places, and which one you enjoy more is a very personal decision that only you can make.
On top of that another factor to consider is just the atmospehere of the school. Certain schools have reputations for being very competitive, friendly, etc. If the sterotypes are true I don't know, but certailny when you walk into a school and meet the students, admins, professors you will get a sense of the school morale, culture, and so on. Each place has a different feel and there were a few places I loved when I was choosing and others that just rubbed me the wrong way. What rubbed me the wrong way might have really impressed someone else. So visit the schools and see how you feel about them, because you are the one that will be there for 3 years. If you can't stand a place for a day or two visit you won't last there for 3 years.
The monetary situation is something to consider and I know Syracuse is one of the most expensive law schools in the country. Although they are ridiculously overpriced, I remember Syracuse being 5-10k more than most. If you can get in-state tuition at Arizona that is a huge factor in their favor, but if your not an Arizona resident I imagine they will heavily charge you for tuition, but you can find that out on LSAC. If you can get in-state tuition for year two and three that can save you a lot of money, but determine if that is really a possiblity.
Final thing there is no RIGHT CHOICE when making your law school decision. It is a difficult one, but whatever you decide you will never know what would have happened the other way. Still if you get an ABA degree you can have a successful legal career, and odds are it will work out wherever you go, but as JBrien said location is a huge factor and the costs are also something to consider. However, you know your situation better than any anonymous poster on the internet and listen to your gut when making the decision. That usually has your best interest at heart and a lot of times it is hard to listen to, but it is usually right.
Good luck to you in law school!