Goat milk is definitely healthier for you than cow milk, esp. if it's raw. It's also more digestible. In my state, raw milk of any kind is illegal, but in other states like Pennsylvania, it's not. My Shop-Rite carries Organic Valley cow milk, which is grass-fed, in 1/2 gallon cartons. It's expensive, though.
So in terms of health, there's your regular pastuerized/homogenized cow milk, which really isn't very nutritious, then raw cow milk, which is better, then pastuerized goat milk, which is even better, and best is raw goat milk. The odds are also higher that the goats were grass-fed and not grain-fed (GMO), which means the Omega 3:6 ratio is probably healthier.
As for taste, I can tell you I buy the pastueurized goat milk (also available at my Shop-Rite and my super Wal-Mart) and it did take getting used to, but I'm fine with it now. It's sold in quarter gallons and it's also expensive, so I don't drink a lot of it. Since I don't eat breakfast cereal anymore, I don't need much of it, anyway, but I will use it in a protein shake now and then, or just drink it "as is" when I want some protein and to feel a little full, esp. at bedtime.
You mention one of the reasons for drinking milk is the calcium. You may already be aware of this, but just in case, you also need magnesium and vitamin D for good bone health, and most people are deficient in magnesium. Your body can't really assimilate the calcium without magnesium.
I don't know if any of this information helps, but I just wanted to put it out there. I've tasted the Organic Valley milk, and it tastes like milk, just . . . more like milk, if that makes sense. I would need to get used to the fat in it, though, which is also in the goat milk. And just my
, people shouldn't worry about the fat in milk. We need fat in our diet for our nervous system and brain.
I hope this helps!
p.s. If there are farms/farmer's markets or co-ops near you, it may be possible to get milk for a lower price, and it would be fresher. You'd also know the source of what you're buying.