The updated version of this Steelseries mainstay, the Sensei 310, subtly reinvented a classic mouse. It needed it. Almost everything is new except the Sensei's ambidextrous shape, and that's exactly how it should be. Thanks to a new plastic shell, the Sensei is grippier and can shrug off a sweaty palm. Steelseries is also using its own custom version of one of the best gaming sensors around, ensuring the Sensei 310 won't suffer from any tracking issues.
        The Sensei 310 fits in your hand just like the old Sensei, and is a great shape for either left- or right-handed gamers looking for a midsized ambidextrous mouse. That means it has a pair of identical thumb buttons on the left and the right, a common issue for ambidextrous mice—it can be far too easy to accidentally click the wrong side's buttons as you grip with your pinky. In my hours of testing the Sensei 310, that hasn't happened once.
       The size and shape of the thumb buttons have been tweaked, making it easy to rock your thumb upwards to press them but keeping them out of the way of accidental pinky clicks. Anyone looking for a small, light, or ambidextrous mouse: this should be your first stop.
   Buy it here: Steelseries Sensei 310