One of the benefits of Polar fleece is that it won't do that sparkly thing that happens when you use a flash with a digital camera, so I'd think making a puppet for home use would work great.
Yeah--my puppets are mostly for home use (entertaining friends and young relatives). I find the soft fuzziness of polar fleece to be great for them. And I totally agree about the 'sparkly thing' with antron. It makes puppets look very strange whenever they have their pictures taken with a flash.
Both fleeces hide seams well, which is really important. It appears that antron does it a bit better (I've never used it myself), but often, the difference shouldn't matter. Seam placement can be just as important as material. I try to keep seams away from the middle of the face by putting them in the back of the head, near the corners of the mouth, or around cheek bones and eye sockets. In that way, the seam issue is resolved (at least somewhat) and you can judge the two fleeces by the feel, the color, the price, and the durability.