What's the difference between Dolby Digital 5.1 and Dolby Digital Plus?

Is one better than the other? Will your equipment support both? Here's what you need to know and how it might affect your setup.

Is one better than the other? Will your equipment support both? Here&#39;s what you need to know and how it might affect your setup.<p><img src="https://www.engadget.com/img/gallery/whats-the-difference-between-dolby-digital-5-1-and-dolby-digital-plus/intro-1787062861.jpg" /></p>