Hey,
Have to pick between Yale and Baylor, huh? I was in the same position two years ago (acutally I had also gotten into Penn). I picked Baylor because of the location and the money. I saved about $150,000 plus by going to Baylor (and I'm out of state). The area around the school is basically crime free and much better than New Haven (or west Philly). Plus, Baylor gives you access to 5000 patient beds (even Hopkins only has about 1000!) If you have any questions post them and I'll try to reply.
---Richard