The Sensei 310 is the newest iteration of the legendary Sensei. SteelSeries upgraded the product with a new sensor they call "TrueMove3", and a new design where the main buttons aren't part of the main shell. At $59.99, it comes in at a reasonable price; let's look at the performance and quality it delivers.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips