Newer Logitech keyboards utilize either GL or GX switches, which vary in design and feel, determined by what type you receive. GL switches hire slim keycaps, while GX switches are a little more regular. Razer Environmentally friendly switches are the organization's response to clicky, tactile keys such as Cherry MX http://claytonhklll.dreamyblogs.com/7690542/the-basic-principles-of-best-mechanical-switches