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Personal opinion on Looks and popularity

Adpi and alpha phi: interchangeable depending on literally every other person you ask but who cares they are both the hottest hands down
Dz: top tier but not nearly on the same level as Adpi and aphi
sdt: not top and doesn't seem like they will be anytime soon with the new pledge class
Sigma kappa and zta: again, interchangeable depending on who you ask. IMHO sigma kappa is hotter but boring.
Axid and phi sig: honestly not as bad as people say they are. I don't think one is any better than the other.
Chi o: nothing personal, not saying they aren't close or involved they just aren't popular
Kd: just really all over the place and not a huge fan