Cherry MX Green and Grey switches are tactile with an actuation force of 80g, but Environmentally friendly switches come with a simply click, whilst Greys don't. Additionally, there are Obvious switches, that are tactile without having a click, having an actuation drive of 65g and “silent” variations of Reds and http://red-mechanical-keyboard94838.full-design.com/red-mechanical-keyboard-Things-To-Know-Before-You-Buy-45684004