Blu-ray to 4K Blu-ray can be a big jump.

We may receive a commission on purchases made from links. If you want the best image possible while watching movies, you can't always rely on streaming. In fact, you shouldn't. Compression, spotty ...

These 4K discs leave a lot to be desired.

The excellent 'Die Hard With A Vengeance' is especially welcome – but the new releases’ artwork is proving divisive.