I haven't owned a GoPro, But I do have the JVC.
It does take decent quality video, It doesn't take nearly as long to adjust in different lighting.
Battery life is a bit short, and I can only find batteries Online for it, if that matters to you.
Overall, it's an Ok camera. I'll leave a link to my video, and you can decide.
Yes, it's paintball. Bring the hate. I haven't gotten out to use my new Ares yet
Walk-on fun part 1 - YouTube