Framestor Remux !new! Link
They are the gold standard because they never compromise on audio, correctly handle difficult sources, and provide a true 1:1 copy of the main feature. The only thing "better" is the full Blu-ray disc folder (BDMV) – but that adds menus, extras, and complexity.
If you see -Framestor attached to a REMUX, and you can verify the file size and mediainfo, you can be confident you have a perfect, unaltered copy of the Blu-ray's main presentation. framestor remux