XSReviews has reviewed the Speedlink Styx laser mouse
A quote from the article:
Speedlink Styx Review
There are two key gaming mice manufactures that have been doing just that for years, Razer and Logitech. However, these high-spec mice come at a cost, and are often over the top for the average gamer, who wants accuracy and comfort, but still some money left in the bank.
So today I have Speedlink's Styx which features a laser diode to pick up your movements, and spitting out 2200 DPI accuracy. Let's see how it performs.
Speedlink Styx Review