Input peripherals can be an interesting subject to tackle in these tiny bite size reviews. It's difficult to quantify strict performance, an issue ameliorated somewhat by the fact that actual performance (dpi, etc.) can often take a distant backseat to user comfort and the software included. Comfort is a very subjective thing as well; a mouse that's enjoyable to use for one person may be incredibly uncomfortable or even downright painful for another. High performance gaming mice can complicate things, and mice like the Thermaltake Level 10 M even more so.