The Great Mouse Showdown

The G5 enables 2000 dpi precision and offers a possibility for 500 USB reports per second. The G5 also enables adjustable sensitivity during use between 400, 800 and 2000 dpi (configurable in the driver software). The mouse is accompanied by a set of 8x1,7g + 8x4,5g weights that can be used to adjust the weight of the mouse to your liking. A very useful side-to-side scrolling feature is included in the scroll wheel.
Logitech G9

G9 also has 32KB onboard memory allowing you to take your mouse with you and use the same profiles and settings when using it with a different computer. Also, there's a custom-coloured LED screen that shows both the current profile used, as well as the current sensitivity setting. The button to change the sensitivity is conveniently placed right in front of the left mouse button and the mouse is accompanied by a set of 4x4g + 4x7g weights that can be used to adjust the weight of the mouse to your liking. The scroll wheel also includes a side-to-side scrolling feature.
Razer Lachesis

Lachesis follows the successes of past Razer mice in its feel and design and is set apart from the rest mainly by its high DPI and a total of 9 programmable buttons. In the standard setup, the sensitivity buttons are on the top of the mouse, in front of the scrolling wheel, but you can customise the button functions just the way you want from the Razer control panel.
Razer Diamondback 3G

Microsoft Habu

Microsoft SideWinder
