sisterhood

You can't really answer that because sisterhood is something you have to feel and experience for yourself. It's like asking which SEC school has the most spirit. I can't tell you what it's like at Bama, LSU or Florida because I don't go there. The Bama guy is going to think his school has the best spirit, while Aggies say we do. IMO, all the houses have to have sisterhood because no one would stick around if they didn't (same way people wouldn't keep showing up to football games and tailgating if they had no school spirit or if it was lacking). To me, sisterhood is more or less the biggest thing sororities sell and why I decided to rush. It's what makes all 12 houses a great place to join vs. other non-greek organizations that can't offer you a sisterhood.

None of them. Sororities aren't about sisterhood, they're too large and too superficial for that. Sororities are about status, any girl who's being honest with herself know this.

Tri Delt, KD and AXO all seem to genuinely enjoy their houses the most. This has NOTHING to do with tier, obviously, but I'd say they seem to have the strongest sisterhoods.

My sorority has the best sisterhood but since I am biased, I'll pick the next best which is probably Theta. They genuinely seem to like each other. And one of my closest friends is a Theta and went through a difficult time recently and I was impressed how her sisters rallied around her. I'm not sure I could show my difficulties to my sisters and trust that I would get that kind of support. Maybe I would but not sure. She never doubted that they would be there for her. Just saying