From review: "As I’ve said before, you typically don’t go wrong with SteelSeries. You might pay a bit more than usual but as the old saying goes you get what you pay for. I’ve been trying to see if that maxim holds up with SteelSeries’ Sensei, their new gaming-optimized optical mouse. I’ve been putting the Sensei through its paces for a few weeks now and for the most part it has risen to the challenge. It’s a classy piece of tech but it doesn’t let extravagance get in the way of doing what it was made for."