Become my fursona. My answer surprised even myself. They're both life changing options, and to me they're both pretty equal. It took me a while to decide, but I finally came up with a decent reason why I would choose my fursona over the million dollars. If you think about it, what are the odds of becoming a millionaire? Really low, I know. Now, what are the odds of becoming a walking, talking, green and black wolf? Yeah, I'm gonna go with the latter.
Then again, my argument is pretty one sided considering I've got a really low opinion of money. It's meaningless to me, and I've learned from experience that it doesn't buy happiness. In short, personal happiness > some green paper.