size matters!

From someone who has been through this system more than once, there is a difference between big and small organizations. If you want a lot of responsibility and have an open calendar to go to all the events (because there aren't a lot of girls they need people at events) then a small sorority is for you. If you want to have a sorority experience that you choose based on your lifestyle and how much time you want to put in, go big. Also think about how you get along with other girls. Theres a difference in how an 10 person org handles it in comparison to a 30+.