Sorry I got the Professional 4. I like the wheel to manage the should and some other stuff and the USB 3 ports on the Top. There are keyboards like the Razer that put these ports on the side of the keyboard and will interfere with your mouse, if you are right hand user.

I got three mechanical keyboards. Two DAS Professional S. (Office and Home) And a Razer Blackwidow v1. So far for work and normal typing. I prefer the DAS Keyboard MX Cherry Brown. For Gaming, I like the click sound louder, An MX Cherry Blue or Green is more suitable in my opinion. DAS keyboards are expensive, but they are totally worth every penny. https://ask.slashdot.org/story...