I've put off doing this for way too long, so I tried to write a fair amount about each organization to make up for it.
Alpha Chi Omega- I love the brand, "Real. Strong. Women.", and the lyre. The badge is gorgeous and so is the symphony.
Alpha Delta Pi- I'm a big fan of Alphie, and of course the Adelphean Society for paving the way for sororities.
Alpha Epsilon Phi- Likely because of my own organization, I have a soft spot for AEPhi and SDT for providing a home for women who might not have been accepted in other sororities due to religious affiliation. I love that the mascot is a giraffe--it makes me feel better about having a "silly" mascot, and I love giraffes. :] Also I like the non-traditional crest, and the website with its scrolling pictures of sisters through the years is so awesome.
Alpha Gamma Delta- I cannot overstate how much I love the squirrel mascot! The vision is beautiful and I'm a big supporter of the philanthropic focus. (When I was younger I always said that if I were a doctor I would be WAY more focused on curing diabetes than cancer... I think because of Stacey from The Babysitter's Club.
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Alpha Omicron Pi- I adore the pictures of the founders in their graduation attire! I think the letters are lovely together and I've always been jealous of how easily they can be typed out while still maintaining their "Greekness". (I mean, you can type out ZTA, but that doesn't scream "sorority!" like AOII does!) I think it's pretty cool that there's only one official color. And of course, the sheaf of wheat and the panda are awesome!
Alpha Phi- I've always really liked these letters together, even if you don't pronounce "phi" correctly.
I have a history of heart problems on both sides of my family, so your philanthropic focus hits very close to home, and I love that you have a time set aside to specifically focus on women's issues. All of the badges and pins are beautiful. I love the ivy symbol and the fact that you have an official constellation!
Alpha Sigma Alpha- "Asipre - Seek - Attain" -- lovely! I really like your values, many of which overlap with my own organization's, but I especially like that one of them is "enjoyment". What a wonderful thing to emphasize! I've always thought the phoenix was a beautiful symbol, but I love the uniqueness of the palm tree. Rubies are my birthstone so of course I'm fond of them. :]
Alpha Sigma Tau- The colors match my university's colors! As someone whose philanthropic focus is on homelessness, I love that you support Habitat for Humanity. The motto, vision, and values are excellent! I love the inclusion of "graciousness".
Alpha Xi Delta- When I was first looking into the sororities at my school, I was drawn to AXiD because of the quill and the motto. I like the Choose Children idea. The Rose Petals program is fabulous!
Chi Omega- I love the story of how "Chi Omega" was picked. I think your badge looks great--love the skull and crossbones! The ring is amazing! I wonder if any founders were buried with their rings?
Delta Delta Delta- I'm sure everyone else has mentioned this, but the work you've done with St. Jude's is inspiring. I love Fat Talk Free week. I have always adored your badge. I like your colors.
Mari Ann Callais is working with the Tri-Delts now, so you must be a fabulous group of ladies!
Delta Gamma- I'm so jealous of your partnership with Tom's! I love your letters and I love the anchor. I really like the original badge. Bronze is a color I'm really fond of, and I dig that it's one of your official colors. Your handsign is adorable and is probably my favorite second only to ZTA's.
Delta Phi Epsilon- I love pretty much everything about Delta Phi Epsilon. As an atheist, I think the organization's secular founding is such a breath of fresh air. I love your colors, love your motto, love your mascot, love the pearl program. Basically just keep on being fabulous.
Delta Zeta- I really like your letters--I think they sound good together and look great. I love all the stories the local DZ's tell me about touring Headquarters, and the history of absorbing other sororities. We joke about killer turtles.
Gamma Phi Beta- I absolutely adore the colors. Pink and brown are SO fabulous together! I love the symbol and the beautiful badge. The paintings of your founders with descriptions of their personalities is great.
Kappa Alpha Theta- I identify with the colors black and gold, and of course I have some serious Theta-love for this organization. I love the Disney connection--I think any Thetas who show up to Disneyworld in letters should get a ticket discount!
Kappa Delta- I really love the dagger and nautilus shell symbols, and the motto. Your crest is fantastic! I of course love your flower.
Kappa Kappa Gamma- KKG is one of my favorites! I love the colors, sapphire, the key, the fleur de lis, and the focus on literacy.
Phi Mu- This chapter was one of the early sororities on my campus, and we're hoping they'll get the chance to come back in the next few years. I love the quatrefoil, the colors, and your motto. The lions in your coat of arms look so fierce!
Phi Sigma Sigma- Phi Sigma Sigma and Delta Phi Epsilon both claim to be the first non-sectarian sorority. I had thought DPhiE was the only one--awesome! I really like your jewel, symbol, and colors. It seems like a lot of chapters have adopted the penguin as a mascot, hmm...
Pi Beta Phi- I love the focus on literacy and the colors. I really love your badge. I was flipping through a Michigan yearbook from 1912, and it was pretty cool to see that there was a chapter of I.C. Sorosis on campus back when we were Omega Upsilon. I love your crest!
Sigma Delta Tau- I already mentioned under AEPhi why SDT has a special place in my heart. I really like your jewel and your colors, and the way your letters look together. I love the little excerpts about each of your founders. It really brings them to life! I also adore the fact that you have a brother--how neat!
Sigma Kappa- My Greek life advisor is a proud Sigma Kappa and I absolutely adore her. How fortunate you are to have her as a sister! Your pledge pin is my absolute favorite. I'm a big fan of the RESPΣΚT campaign. I love the stylized symbols you use--the hearts and violets look great!
Sigma Sigma Sigma- I love purple, and your badge--the cute little skull and crossbones surrounded by sigmas. I really like the different degrees. I have a very positive impression of Tri-Sigma, and I can't help but attribute that to the wonderful way KSUViolet06 represents your organization on these forums.
Zeta Tau Alpha- I've always envied how easily you can get items in your organization's letters. It's almost like cheating! Your handsign is my favorite, and I suppose it follows that I love the crown--who wouldn't want to be a princess? I also love your colors and your crest. Your website is my favorite by far!
Theta Phi Alpha- I was born in 1912. When I was researching what sorority I wanted to join, everything about Theta Phi called out to me: the crest, the compass, the beautiful colors (blue and silver are my favorite!), the jewels (again--sapphires are my favorite!), the flower (guess my favorite? and my namesake!). I loved the idea that it was a place for women to find sisterhood who were not welcome anywhere else. The letters have a wonderful flow, verbally and visually. The badge is stunning, especially the centennial badge--my only complaint is that it doesn't come in a silver (white gold) version! The creed is the most touching values statement I have ever read from any organization. Homelessness is my cause of choice. I feel like I found my home in Theta Phi the way a member of NPHC might have, by researching and pursuing my ideal organization. I think the only thing I don't like about Theta Phi Alpha is the mascot, but everyone else seems crazy about the penguins, so I guess I can let it slide.
Theta Phi Alpha has forever changed me for the better.