Never tried Moose, but I don't imagine it to taste like deer. Elk doesn't really taste like deer, and even antelope is different. Bear is good, but can be greasy if not prepared properly. I love rabbit very much. Put one in a crock pot with some potatoes, onions, carrots and stuffed with apples, rosemary and other herbs, really really good.
My girlfriend says rattlesnake is good, but I have yet to try it. Ostrich is also good.