Andrea Gavazzi

Hey, I know a lot of you guys already answered the question about the D21, but i also have found a really cheap one 3000$ or 4500$ with a codex 3010 . Is this camera not worthed even at that price? As cinematographers would your rather rent a Black Magic, F5 or C300 instead of the D21 for the same price ? What are in your experience the pro and cons of this camera? thank you so much Andrea