Microsoft’s latest Sidewinder mouse, the X8, combines a wireless design with the latest in optical sensor technology. Sporting a proprietary BlueTrack sensor, the X8 will work on most any surface, including granite and marble, which are problems for mice with more traditional optical and laser sensors. This is also Microsoft’s first wireless Sidewinder mouse—it utilizes the traditional 2.4GHz band, but updates more times per second than most wireless Microsoft mice.

We love the button placement and scroll wheel on this mouse. All of the buttons are easy to find and quick to press and the scroll wheel is quick and responsive. The top and bottom thumb buttons are especially praiseworthy. Unlike other mice equipped with a pair of thumb buttons aligned in a fore and aft configuration, the Sidewinder’s thumb buttons are aligned vertically, with Mouse5 placed above Mouse4.
 
Like the Razer Mamba, which we reviewed last month, the X8 features a play and charge cable. Using a magnetic power adapter that quickly and easily snaps into place, you can convert the X8 from battery power in mere seconds, should your battery die. The X8’s connection system is a marked improvement over the Mamba.

Continue reading this review after the jump.

When we first reviewed the original Logitech G9 (November 2007), we didn’t like it. Specifically, we thought it was uncomfortable to hold, using either of the removable shells. In fact, we described it as “not particularly comfortable for day-to-day mousing” before complaining that it was unsuitable for people who use a traditional palming grip.

We were wrong. After we made a few small adjustments to our grip, we fell in love with the G9—at least when using the grippy palm-friendly Precision body. We still don’t like the smooth grip—dubbed Wide Load—and we’re generally not fans of having to adjust our grip to suit a mouse, but the smooth response and power-gamer-friendly features that the G9x delivers make this mouse the best we’ve ever tested.

Continue reading this review after the jump.