I just finished up rush, although I was unsuccessful, a girl I talked to during one of the parties offered me the best advice about ranking when the time came to do so.
I asked her what made you choose *blank* sorority and she told me the following (it's paraphased): I really saw these girls as people who can hang out, be comfortable with and most of all the organization and its members reflect who I am.
To some that maybe vague advice but the way I thought of it is if you feel comfortable and see part of you through that sorority and that may indicate the best fit for you. You do not have "change yourself so you can fit in."
I just wanted to share that with everyone b/c I know it will benefit all PNMs now and in the future.