What's the difference between the Ring Chime and Ring Chime Plus?

Based on the product listings, the standard Ring Chime is the cheaper plug-in alert speaker, while the Chime Plus adds a built-in night-light and a customizable tone library. Reviewers treat the base Chime as the value pick and the Plus as the option for people who want extra tones or a soft hallway light, though the Plus has far fewer reviews to draw consensus from.