Razer Diamondback

Specifications

Optical engine powered by kärna precision
1600 dpi, twice that of conventional high performance sensors
High speed motion detection, up to 40ips and 15g
Frame rate over 6400 frames per second (5.8 megapixels per second)
16 bit data path, as compared to 8 bit and 12 bit data paths used by other conventional mice
Always On Mode – the optical sensor never powers down - provides instantaneous response at all times during gameplay
Buttons – 7 physical buttons optimized for gaming response and independently programmable
Ultra large non-slip mouse buttons, tactile response design
Non-slip side rails and new ergonomic ambidextrous design
Zero acoustic Teflon feet for smooth motion over any surface
Gold plated USB connector for maximum conductivity
Size: 5.04" length x 2.5" width x 1.54" height
7 foot, lightweight, non-tangle cord
Award winning Razer drivers featuring On-the-Fly sensitivity adjustment
Chameleon Green and Magma (red) translucent chassis options available
Comes with custom designed Razer Diamondback Lan-Pack for storage and transport.

Pros
Comfortable
16-bit Processor (Eliminating Negative Acceleration)
Four programmable side buttons
On-the-fly sensitivity adjustment
Very high DPI optical sensor
Smooth scroll wheel
Fast and stable teflon feet
Available in two different colors
Always On
Optical (No mouse ball to get dirty)
Razer Software/Drivers

Cons
Side buttons require strong fingers
Side buttons in awkward position
Side buttons are too small
USB Only