I like this thread ...
Kappa Delta:
I only know two KDs IRL, both two very awesome ladies who have things remarkably together (including their wardrobes

). (Luv the KD handsign as well; it's very cute.)
Alpha Phi Alpha:
One of the most impressive histories and amazing stories of any fraternity. Period.
Alpha Delta Pi:
I like how this organization presents itself in a very classy and prestigious way. Also nicest lawn on the GT campus