This is a hard question. Well, if I went only by the 7 sororities at CSULB, if I hadn't gone SK, I would have chosen either Delta Zeta or Tri Delta.
Delta Zeta because I found them extremely friendly, funny, and to be perfectly shallow, IMO, they had the most beautiful house.
Tri Delta because I knew many of them from classes and they were fun to hang out with.
If I chose out of the 25 remaining GLO's (SK not included), then I would choose Alpha Gamma Delta.
I absolutely love the AGD mission statement:
Inspire the Woman. Impact the World.