[1] robust, thick cabling so I can coil it without fear of kinking - something where the cable is as thick as the body of the toslink connector
[2] solid, meaty connectors
[3] right-angle toslink on one end (optional)
[4] right-angle mini on other end (optional)
Does such a thing exist?
Heh. I once sought
the exact same thing - check out my first post in this thread (looks like you found this thread already). AFAIK, no such thing exists. There are cables that satisfy [1-2], but none that also satisfy [3-4]. If they do satisfy [3-4], they no longer satisfy [1-2].
After getting the SonicWave cable [1-2], I wasn't happy using adapters [3-4] - adapters are just two more links in the chain that could go wrong - so I got the Sound Pros cable and have used it ever since. While not as robust, it's been bullet-proof for me. I still carry my SonicWave + adapters as a backup, though, just in case.
IME, the SP cable is plenty robust as long as you're reasonably careful with your gear. I don't baby mine, but I don't abuse it, either. And so far, so good. FYI, you can often find on EBay a cable identical to the SP one, but for < $10 + s/h.