I love this idea!
I would have gone with:
Kappa Kappa Gamma - I love how the name sounds together and the key symbol is so adorable! The girls in Kappa at my school are unbelievably sweet and I loved them during recruitment.
Zeta Tau Alpha - gorgeous colors and I love the crown motif! Plus their 'crown' hand symbol is so cute.
Alpha Phi - the house I would have joined had I not found my heart in Tri Delta. My Aunt is an Alpha Phi and she instilled my love for the Greek system. Their philanthropy hits close to home for me and was something I would have supported relentlessly!
But ∆∆∆ takes the cake for me!