Sorry Lucky Buck, I was incoherent in my last post. The point is, not all med schools even require calc so they certainly don't care what math classes you took beyond it. Like TheGalvaniFrog said, unless you can use math to pad your GPA (some of us are a little weird like that, right?), then choose the path of least resistance - few med school adcom members will know the difference between Calc I and Differential Geometry.