I feel completely confused by the proliferation of synthetics for dubbing and hair. We seem to have comparable and identicle materials packaged by different distributors and labelled with their own "Mickey Mouse" name. We are then told that they are all different and each one is vital for a specific recipe. In my opinion this is a bunch of marketing garbage.
By applying some degree of technical knowledge and testing, I can show that one of the most prestigeous, heavily advertised, synthetic hair materials that retails for about $6 to $7 per package can be had for $1.25 a package with a different name on it. In the ancient times when more materials were natural, a piece of cream fox belly fur was a piece of cream fox belly fur. Your main concern was only the exact color. I think the guys who suggest tying with a limited range of materials have the right idea.