I assume you are buying new. If that is the case, I would go with the Maxxis for just a few $'s more. I have shot both (own an am32) and cannot really tell the difference between the two. If you are not concerned about the lack of warrant, I would assume there will be several AM's making their way onto the classified section, might be the time to get a real steal on a sweet bow.
You cannot go wrong with either bow, both are very sweet!