Yes! Sorry I didn't reply sooner. I've had them for a while, but I've been finishing a different project so I kind of forgot about them.
Sorry for the photo quality too, but I was using my phone and the lighting in my apartment isn't great. In person all the furs are a true black color.
Left to right is the alpaca, the regular Mongolian (not the curly sheep), and the long pile gorilla (
http://www.fabricempire.com/faux-fur-fabric-long-pile-gorilla-black-60-wide-sold-by-the-yard.aspx).
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The alpaca definitely seems like the right kind of fur as far as curliness and texture, but this particular one has kind of cheap looking fibers. It's still pretty decent, just looks more plastic-y and faux than some others. It does photograph a little better than it looks in person, though all the grey looking speckles in this photo are reflections from light hitting what I assume are certain fibers that are shinier than the rest (which doesn't help the fake appearance).
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The regular Mongolian is my favorite of the three. It's a close match in length and general shagginess, but it’s chunkier and a little intentionally matted and less curly (rather than looser/fuzzier brushed out fibers on the movie cloak). But the fiber quality is nice so that makes it look less fake, and for me that makes up for any slight differences in texture. I don't know that I'll find anything better on the tight budget I'll have for mine, so this is probably what I'll get.
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And the gorilla is similar to the Mongolian in length, but shinier and thinner and less textured (it kind of looks like a cheaper, more artificial version of the Mongolian). Fiber quality is a little bit better than the alpaca but still kind of the same plastic-y sheen, and this fur type is the least like the movie cloak, so it's the weakest of the three overall.
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So of these at least, I highly recommend the regular Mongolian, but I ultimately recommend getting swatches if you can.
And your cloak looks fantastic so far! What fabric did you end up getting? I swatched Fabric Empire's felt and it was way too scratchy, so I'm looking at JoAnn's felt or fleece but I still haven't decided on anything. Your fabric looks really nice. Also really good to know which pattern you chose and that it worked out. I've been comparing a bunch of them and trying to decide how full/loose versus shaped/fitted the shoulders should be (like whether the side seams should actually curve over the shoulder following the shape of the neck/shoulder/arm, or whether the whole thing should basically be a half circle shape so the shoulder area is loose, if that makes sense).