At sky medical supplies we do not have preferences over the medical supplies we sale. However, I can tell you that the NOVA brand is well-known for producing high-quality, durable, and safe mobility products such as raised toilet seats. The NOVA raised toilet seat raiser is designed to provide additional height to the toilet seat making it easier for individuals who have difficulty sitting or standing from a standard-height toilet. They are usually made with durable materials, and easy to install and adjust, making it a popular choice for people who are recovering from surgery or have mobility issues. Additionally, the NOVA raised toilet seat raiser may have additional features such as a non-skid surface, built-in hand grips, and a locking mechanism for added safety and security.