As you can see below, the new mouse from Razer has a removable side which allows you to swap between a 12-button numeric keypad, a circular seven-button cluster and a more simple two button side.  The sensor is a PixArt PMW3389 with up to a 16,000 DPI sensitivity, similar to the majority of high end gaming mice.  The Tech Report liked the physical hardware, however they continue to have challenges with the Razer Synapse software with which you configure the mouse.  If you are a gamer that bounces between genres and could use the ablitity to jump between a numpad to thumb buttons this may be worth a look.

"Razer's Naga Trinity mouse offers gamers three modular side panels with anywhere from two to 12 buttons to adapt to the needs of any game. We swapped those panels around and dove into Razer's Synapse app to see just how powerful a bite this mouse can deliver."

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