I don't really keep up with this but I hear the camera guys talk about it.

They go for the fastest writing speed they can get due to the current fad of 'action' shots from the viewers POV. But this is motion picture quality they are after; something that is meant to be seen on the big screen with a minimum of digital touch up.

I think what you have will be find for what you are trying to do since it matches the capabilities of your recording device.

But who knows what we will be using ten years from now?