Hello! Both the EGCVRF and GCVRF are compatible replacements for your Edwards | EST GCFR-VM panel. The choice between them depends on your specific requirements and preferences. The EGCVRF offers advanced programming options and a user-friendly interface, making it a great choice for users who need more customization. On the other hand, the GCVRF provides a streamlined and straightforward solution, ideal for those who prefer simplicity and ease of use. Feel free to choose the one that best fits your needs!