If your primary concern is noise and you are in a shared office, the MX Keys is the better choice. The K8, even with quiet switches, will still be louder due to the nature of mechanical keyboards. The MX Keys offers a more refined and quieter typing experience which would likely be less disruptive to colleagues. While the K8's customizability is a plus, the MX Keys is designed for office productivity, trading customization for usability in a shared workspace.