Out of curiosity, why'd you change from Cow's Milk to Goat's Milk?
I temporarily switched to Almond Milk because it doesn't have lactose (which doesn't promote estrogen production), has the same amount of protein, more vitamins, and at the time it was way cheaper than organic whole cow's milk. The biggest drawback was that it tasted kinda gross, which I remedied with a bit of cinnamon, but now that it's fairly expensive I switched back to cow milk.
I'm based in the UK and based on my own personal experience, Almond milk isnt easy to get hold of and would probably be very expensive.
I read a book by Larry Cook in which he explained that cow's milk in the way it is distributed and processed now isnt as good for humans as it once used to be, and that goat's milk is more harmonious for the immune system. It doesnt taste as good as cow's milk but its not that bad either. I find cow's milk very watery now.
It only costs a little bit more than cow's milk and since taking it, my immune system has been better.
As for the other alternatives, the only one that i could find was Soy milk, but personally i feel it tastes worse than goat's milk and i dont know whether this is true or not, but someone told me Soy messes with your hormones, and so i've been rather paranoid since then about it.
You could try soya milk, rice milk, or oat milk as well.
Personally I like soya milk, though only the unsweetened kind. For some reason most soya milks are sweetened and consequently taste like some kind of watery pudding.
(I gave up dairy a few years back when I discovered that I had a mild allergy to it.)
I temporarily switched to Almond Milk because it doesn't have lactose (which doesn't promote estrogen production), has the same amount of protein, more vitamins, and at the time it was way cheaper than organic whole cow's milk. The biggest drawback was that it tasted kinda gross, which I remedied with a bit of cinnamon, but now that it's fairly expensive I switched back to cow milk.