They do everything an expandable broadhead is supposed to do....fly accurately, and cut a large exit hole. Just try to stay away from the shoulder, and take shots on deer that are mostly broadside. You definitely want to try (just like with ANY type of broadhead) to try to get the arrow to at least stick out the opposite side of the animal. There won't be much to the bloodtrail if you don't get a passthrough with an expandable, because they don't open up until they are fully inside the animal. With the draw weight you're shooting, you shouldn't have a problem though.
Good luck to ya.