The best HDR (High Dynamic Range) format depends on various factors such as your specific needs, the devices you use, and the content you want to display.

There are several HDR formats available, including HDR10, HDR10+, Dolby Vision, HLG (Hybrid Log Gamma), and Advanced HDR by Technicolor.

HDR10 is currently the most widely used HDR format, and it is supported by most HDR-compatible TVs and streaming devices. HDR10+ is an updated version of HDR10 that adds dynamic metadata, allowing for more precise color and brightness adjustments on a scene-by-scene or even frame-by-frame basis.

Dolby Vision is another popular HDR format that offers a more advanced version of dynamic metadata, providing a better HDR experience. It is currently supported by many streaming services and some high-end TVs and devices.

HLG is a format designed for broadcast TV, and it is backward compatible with standard dynamic range displays, which means that it can be watched on both HDR and SDR TVs.

Advanced HDR by Technicolor is a relatively new format that aims to offer an advanced HDR experience. However, it is not yet widely supported by devices or content.

In summary, HDR10 and HDR10+ are great options for those looking for a widely compatible and accessible HDR format, while Dolby Vision is ideal for those who prioritize the best possible HDR experience. HLG may be a good choice for those who want to watch HDR content on both HDR and SDR displays.