One thing that hasn't been addressed here is that it sounds like this one recommender sent letters in for ALL of your schools. This means that if you go the third recommender route, this person needs to make sure they customize the recommendation letter to each school in addition to falling all over themselves recommending you. And - don't ever ask that person for a letter again. It could have been that s/he wasn't prepared enough to write you a steller rec (i.e. didn't know how enthusiastic s/he should be), but you just want to make sure that for future recommendation letter requests, the writers know that it's not just about answering the questions straightforward. It's about making their letters enhance and validate what you've already included in your application. Let us know if you end up pursuing the third rec!
Kaneisha
Kaneisha Grayson, Harvard MBA + MPA '10
Founder, The Art of Applying®: get into the graduate school of your dreams and get money to pay for it
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