I have one of those two. The only complaint I have is that if you flip the switch to turn the “Fn” key back into a regular Menu key you can no longer adjust the back light brightness or turn them off at night. They stay on the last brightness you set them to. It helps keep the dust off, but I have to put a cloth over it at night to cover the lights. Other than occasionally typing in a password in the dark I don’t see much use for back lighting. I also don’t need an Fn key. All it gives you are some shortcuts for media and volume control. I can set super key shortcuts for those in the Gnome desktop (Linux). You can probably do it in Windows and macOS too. If I were buying another one I would get one of their customizable [mechanical keyboards](https://www.wasdkeyboards.com/products/mechanical-keyboards/custom-printed-keyboards.html).