I love using Handbrake to compress, as I often upload to DTube and YouTube, so it makes sense, especially sof those that like to keep a copy on their hard drive.
I bought my cam a couple years back specifically coz it did 4k...However once I shot some and saw the file sizes, I decided it was not worth it at this point in time. I am good with 1080 at 60 fps.
OMG I have to say the bun on the Mickey D's looked awesome!