I would choose:
Zeta Tau Alpha because I love their colors and the crown, and the Zeta's I know are all super amazing girls. Also I like the one word nicknames, and that applies to Theta and Kappa as well
Gamma Phi because I love their letters.
KKG because of the key badge. Like our Quill, their badge is in a different state than most. I'm not a huge fan of the badges that have the letters stacked on top of one another because it always takes me a while to figure out what it says lol.
Pi Phi and Chi O have super cute nicknames.
Finally, my favorite color is green so Kappa Delta wins me over in that regard
Oh and ditto the turtles soooo adorable!!
ETA: This was my 500th post. I think I've made it out of newbie land lol