Razer BlackWidow Keyboard

Notable features.

• Mechanical Key switches. (Cherry MX Blue) 〔see Keyboard Key Switch Mechanisms〕
• 5 Extra Programmable Keys
• 10 key roll-over 〔see Max Number of Simultaneous Key-Press (N-key Rollover, NKRO, Ghosting)〕

Bad features:

• No dedicated multimedia key.
• A Fn key. This means you lose a important programmable modifier key at a important spot. Bad for programers.

I avoid Razer products. Because, they want people to use their cloud software. Without registration and internet, your key settings are useless.

this is so for their Razer Orbweaver Keypad .

These days, there are lots choices. Logitech doesn't force people to connect to their data center in order to use key customizations.