Plastic mirrors and glass mirrors tend to offer different benefits, with plastic mirrors providing durability, light weight, and customization, while glass mirrors tend to offer higher optical quality, more resolution and a more traditional look.
It ultimately depends on the specific use case and other requirements to determine which type of mirror material is the “better” choice. For example, if you need a lightweight and durable reflective surface that offers a wide range of customization options, acrylic mirrors are an excellent choice. But if you need the highest possible optical quality with little to no distortion, then glass mirrors may be a better option.