I've recently started to be aware of the manifold online resources for animations, models, etc. Such sites as mixamo, Daz3D, proanimationbank.com, etc. This all of course fits into the somewhat growing trend centering around pre-existing models, animations, scripts, etc. for a small fee at such online "banks". Are any of these tools/sites worthwhile? I mean, they look like they could save quite a bit of hassle, but I don't know whether or not such databases and tools are generally scorned or considered legit, quality time-savers amongst the pro faction of development.