Question about Panasonic Lumix DC-GH5 Leica

I would recommend a good brand SDXC card such as Sandisk Extreme Pro in the UHS-I version. They have become quite cheap in the meantime. It is said here that UHS-II cards have an advantage: https://www.speicherkarten.guru/-Kameras...
However, one may ask whether the massive additional price is worth it. The memory speeds are not nearly exhausted.