Best answer: The purple opto-mechanical switches are a fresh take on mechanical gaming keyboards. It has light, superfast actuation thanks to using a beam of light, while maintaining the satisfying click that so many gamers crave. Currently, it's available on the Huntsman and Huntsman Elite keyboards, both of which are worth buying.Try the switches for yourself: Razer Huntsman ($130 at Amazon)Elite-class keyboard: Razer Huntsman Elite ($180 at Amazon)