In all honesty... I would say if your having trouble deciding where to go on a local level.  Look at the accomplishments  of each house on a national, and historic level. 
I came down to Kappa Delta and Delta Gamma. I bet you can guess which I chose.... But all of the people I met were so wonderful and the houses were beautiful - It was so very hard to decide.
So I took a step back and thought about how If you choose to you can be associated with your house for life. I wanted to be a part of something that people would recognize, and respect. 
I still have MANY Kappa Delta friends, But I have thousanda of Delta Gamma sisters.  Delta Gamma is bigger nationally and has acomplished more during her lifespan.  I think she is older too.
Just trying to give you a new way too look at everything!  
Oh2bDG