differences between ago and sdt?

From my perspective (not in either of this sororities), AGO seems nicer. Just from those I have met. SDT is national so they aren't suppose to haze (I mean locals aren't supposed to either but they're usually less regulated). But I've heard SDT hazes more than AGO does ironically. I think they're both considered "top tier", even though we don't really have tiers here. Both take girls with a certain "look" (think Long Island).

One is local and one is national. You'll get a different experience from both of them. They both got pretty big from the last PC so it's really a mixed bag - you might meet someone super friendly and you might meet someone who isn't really your type per se. SDT is more active on campus and in philanthropy because that's the nature of the nationals, AGO has a big party vibe and they're a lot of fun to be with. Regardless, they recruit similar types of girls. Only rush them if you feel like you'd belong, not because they're considered top tier.

What about AOPi? They're up there with SDT and AGO right?

From what I see ago and Aopi are more similar than sdt and ago. Ago and aopi both take more of a "non sorority girl" compared to sdt. Tiers are NOT a thing at Geneseo. Confused why anyone would say they are. It's literally what girls you like.
Ago/ Aopi/ sdt/ Clio/ RLK are all even with which frats they party with and how frequently they do and they are all knows for having attractive amazing girls.