Boy, this is easy.
The
Fabulous Xi Chapter at the University of Arkansas, Fayatteville.
Current chapter counts put them at about 150-160 I think, and their house holds 100 easily.
This is the baddest Kappa Sigma chapter, and they know it. You don't go down there as a pledge, at all. Hell, you don't go there as an active unless you know your sh*t.