Acrylic prints have the highest degree of resolution and detail while maintaining great color depth and contrast.  They have a high degree of durability, typically higher in weight and are the most expensive option.  Acrylic prints have a modern finished look and provide good protection against UV and moisture.
Metal prints have just slightly less resolution and detail but maintain the high color depth and contrast.  They are the highest in durability and very easy to maintain and clean. Metal prints are lighter less expensive than acrylic.  Metal prints have a modern finish and provide good protection against UV and the highest protection from moisture.
Canvas prints provide a classic art look.  Resolution, detail, color depth and contrast are still very high but slightly less than metal and acrylic.  Canvas prints are about the same weight as metal and the least expensive media. Canvas prints provide the least amount of UV protection (although still very good) and are not recommended for wet or moist environments.