Firstly, congratulations on getting accepted into these programs! Disclaimer, I do not have the foresight/wisdom your letter writers might have. With that in mind, since location, rank, and funding are similar I would really only consider placements, culture, and research interests (on the condition that you're certain you know what you wish to study). To gauge culture, I recommend you speak to as many PhD candidates as possible and ask them about level of support they received in years three through six.