Just a few questions and one assumption before I answer your question.
First, I'm assuming your female friend has had some experience with anal penetration and finds it enjoyable. If your friend hasn't I'd like to encourage your friend to learn more about it. If done carefully, it can be a pleasant experience.
Second, are we only limited to these two options that are listed above or can we offer other suggestions?
Third, how many toys or aids does your friend already own? If your friend doesn't own any, perhaps you might want to start off with something that requires less preparation than anal might.
Finally, can the toys you've mentioned above be found on this website? I'm unfamiliar with the toys you've mentioned above. I'd like to take a look at them before I comment.