Size of new member class

Hi! My daughter is looking at a couple of large universities and I noticed that sororities at one school recruit NM classes that are almost twice the size of the other. I’m curious if you felt like the size of your class/sorority had a big impact on your experience? Is there a big difference in experience between 50 or 60 vs 90 or 100? My class in college had about 30-40, at a smaller private university of 10k undergrads, so I don’t have any experience with this. Thanks!