Although I haven't been granted an invitation at Emory, I interviewed at Rochester and TOTALLY loved the school and the people. I love Rochester in general (I went to a nearby school for undergrad) and I think that one the main selling points is the fact that ALL of the students at Rochester that I talked to were exceedingly happy. I guess your decision should be based on where you felt you fit in the most. Also consider whether the school is Pass/Fail or Pass, High Pass, Fail, honors. (Rochester is P/F)