It's been over half a year since we've had the Canon C300 Mark II's in our collection, and we're really starting to see the difference between them and the Mark I's. Let me say quickly, we really love and endorse our C300 Mark I's, and send them out constantly. That being said, we're really seeing a difference in the improved image quality of the Mark II's. The image is just a little clearer, the colors are just a little more robust, but still easy to deal with, and the option to shoot in 4K has been appreciated more often than expected. To keep this short and sweet, we love our Mark I's, but totally recommend the Mark II's to really add value and extra quality to your shoot.