If I hadn't gotten into Davis, my partner and I would be making this very same decision! I think that I'd probably wind up at WI due to their incredible strength in my partner's graduate school interests (microbiology), but I'd probably want to go to Cornell in a vacuum. While I think both schools are great, I think I'd feel most immediately at home at Cornell.
I very much like their curriculum - coming from a liberal arts school, I love the intellectual intensity and engagement of small group learning as opposed to pure lecture, and I also had the impression, while at their admitted students' weekend, that their curriculum is extremely well thought out. It seemed really cohesive, logical, and intentional - I really liked the effort they put into constantly reviewing and revising their curriculum to make it the most comprehensive and effective mix of PBL and traditional lecture. While Cornell's facilities for student learning were perfectly acceptable, though not brilliant, their clinics were gorgeous. I also really liked how much funding was available, whether it was for student travel, student research, or less transparent but equally important issues like faculty hires, renovations, etc. I also liked Ithaca quite a bit - neither Madison nor Ithaca are metropolis-es, but they are both great (if frigid) places to live!