Sony UBP-X700The case for a 100 GB 4K Blu-ray discThere's a good reasonIf you see a 100 GB 4K Blu-ray disc, it's something you should celebrate if you value quality over everything. That doesn't mean 66 GB discs suffer from this, mind you, but it means a 100 GB disc looks better than a 66 GB more often than not. It's just that the 100 GB disc does it better than the rest, but you can't always guarantee you're getting one. A Blu-ray Disc Read-Only Memory B Broadcast Disc Read-Only Media C Blu-ray Digital Read-Only Module D Broad Disc Recordable Optical Media Correct! Aside from that, despite how devastating it sounds, 100 GB discs are great when companies opt for them.