There have been a few times recently where I've looked for rigged models to help with quick turn-around jobs and it's starting to feel like there are actually literally almost none available, anywhere.

Turbosquid has most of its characters in Max format, and those that are listed as maya (.ma or other) state in the description that the rig is only partially implemented for that format, or in some cases not at all.

Other model resource sites are just a mess or too hard to browse and search.

I'm quite comfortable rigging my own models but often I'd rather just find some ready-to-go assets and factor the cost into a project.

Can anyone recommend really good quality, reliable sources for this kind of thing? Maya format specific, quality rigs, low poly or high poly (often low is enough).

Many thanks for any possible suggestions.