I actually got a C500 + Oddysey 7Q not that long ago and absolutely love it. Abelcine made me an offer I couldn't refuse and since then haven't looked back. It's a C300 when I need to go light or work on simple HD productions and a 4K RAW monster when I need it to be. The skin tones, recording options, build quality, and ease of use make working with it a wonder. Especially since my previous camera was an A7s.
I look forward to bringing it with me to Jamaica for a feature and Cambodia for travel shoot.
The only issue I have is that there aren't many people out there who own one so not much of a community. I have no one to bounce ideas with or troubleshoot with :/
If anyone on here owns or is interested in the C500 feel free to message me - would love to share ideas