I own a DAS Keyboard Professional which has Cherry blue switches (http://en.wikipedia.org/wiki/Keyboard_technology#Mechanical-switch_keyboard http://en.wikipedi

I own a DAS Keyboard Professional which has Cherry blue switches (http://en.wikipedia.org/wiki/Keyboard_technology#Mechanical-switch_keyboard http://en.wikipedia.org/wiki/Keyboard_technology#Mechanical-...). I love the way it types and I love the sound it makes, but if you asked me how much more productive it made me then I'd answer zero percent. The only time I actually need to type a lot (and fast) is when I chat with co-workers about project-related questions.