The Glorious GMMK 3 is a keyboard that offers a truly customizable experience with over a billion possible configurations. It allows for mixing and matching of Hall Effect and regular MX switches, different plates, gaskets, and even the top and bottom frame. While this flexibility comes at a price, the GMMK 3 provides a platform for building your dream keyboard and could potentially be the last one you ever need. However, a software bug affecting the Hall Effect version with standard MX switches currently hinders its recommendation.