I recently purchased an FS5ii and I wanted to text out some of the 2K 240 footage. Overall I was impressed. The 2K seems to be a crop into the sensor so the noise is amplified even at the base levels of 2000 ISO so I wouldn't recommend shooting it without plenty of light. It also leads to some color noise but I think that can be avoided if you shoot RAW. Either way, I was pleasantly surprised at how the camera performed!