Keychron K3 vs Mountain Everest Max

The Keychron K3 and the Mountain Everest Max are different types of keyboards. The Keychron is a wireless, mechanical keyboard with low-profile switches, and it's in a compact 75% format. It's designed for office use, so it's limited in gaming features like macro-programmable keys, but it fully works on both macOS and Windows. The Mountain is a modular gaming keyboard, and it comes with a detachable Numpad and media dock, which you can place how you want or simply remove them. It has software to customize its settings and set macros, but it's not available on macOS. The Mountain is also hot-swappable, so you can use whichever switches you want, but there's a variant of the Keychron that's also hot-swappable.