THANKS SO MUCH for doing a Search!!
Learning about the Greek organizations on your future campus is a great way to prepare for Rush. However, if I were you, I would stick to the basics. Visit the sorority national websites to learn about the history of the groups - what their mission is, what philanthropies they are involved in, etc. Get a general picture of what each one stands for so that you don't go into Rush completely clueless.
BUT, I wouldn't ask for personal opinions about the groups or make your decision based on other peoples' views. You have to make that type of decision on your own, because it is a lifetime commitment. Don't let outsiders influence you - make up your own mind. Believe me, when you go through Rush, you'll be able to get a feel about what house you feel most comfortable in. Trust your instincts.
Hope this helps! Good luck and keep us posted!
Carrie