I've read those things too, that there isn't as much of a difference between organic and regular milk as you might think. I guess it depends a lot on where you get the milk. I, personally, think the organic milk tastes better than the store brand regular milk we can get here. But my favorite is the local, non-organic, milk (and it's the cheapest!). It really tastes good! There are laws about things like antibiotic use in the cows, something like the cow has to be removed from the herd for a certain number of months and their milk has to test negative for antibiotics before they can be brought back. For organic farms, the number of months is longer, a year I think.
I don't know about the hormones. I guess, once again, it depends on where you buy the milk. Our local, but not organic milk, doesn't have the added hormones.