Well I was spoiled growing up in Southern Wisconsin where the deer are all corn fed as we used to laugh. They graze in the corn, soybean, alfalfa fields, and oat fields and are about as good as a steer except they have less fat to them. Then moving up north, the deer eat a little corn I am sure, but mostly acorns, and other wild mast crops and grass. It makes a much stronger taste to them. But still very good mind you.
But the thing that really stands out is that caribou steak I ate at a friends house. It has a real wild strong taste. He said its because they hunted in a different area of Alaska that year where the caribou are not grazing on grass as much. That's why he made sausage out of it. And the sausage was excellent by the way.
I can remember when I was a kid, my dad had hunted in the swamps near Black River Falls. And he shot a huge black swamp buck. When mom started cooking a chunk of that thing, it stunk the house up so bad, even Dad complained. And my family eats lutefisk, so we know stink. He took that whole buck to a local meat market and they made venison salami out of it. Man that was so good. I still make salami (not summer sausage) out of my venison.