The Onza is an improved version of the traditional Xbox 360
controller built with a single purpose – pwnage. The controller has backlit ABXY buttons,
adjustable analog sticks, a 4 buttoned D-pad, and comes with a 15 ft braided
USB cable – which is compatible for PC and the Xbox 360. Microsoft's wired and the Onza cost the same (USD 39.99 - BestBuy).

The triggers have a curved shape which allows a more relaxed grip.
The D-pad is made of four separate buttons, which have a
great solid feel. However, the traditional Microsoft controller is much better
than the Onza for games like NBA 2K12, Elder Scrolls V: Skyrim, Tom Clancy’s
HAWX, etc. where the D-pad is used to quickly switch between various modes. The
Onza needs a lot more input pressure than Microsoft’s D-pad. The start and
select buttons have been placed horribly towards the rear end. Razer could have
stuck with the traditional placement.
The Onza is a tad bit more accurate and more
responsive to input (except for the D-pad). It has two buttons on the bottom surface to remap the
keys. This is useful to remap the additional LB and RB buttons on the front end
of the controller.
Most gamers are used to the ergonomics of the
Microsoft controller, and it may take a while to adjust to the larger and more versatile Onza.