Das Keyboard X50Q vs Das Keyboard 4 Professional

The Das Keyboard X50Q is much better than the Das Keyboard 4 Professional. The X50Q has better build quality, customizable backlighting, and programmable keys. It also has software support and includes a wrist rest. The X50Q's Gamma Zulu switches are very similar to the Cherry MX Browns on the 4 Professional, but they have a shorter pre-travel distance and a lighter actuation force, resulting in a lighter and more responsive typing experience. The X50Q is only available with the Gamma Zulu switches, while the 4 Professional is available with Cherry MX Browns or Blues.