Great mouse for the money. Has pros: - Ability to adjust the weight of the mouse -Pixart 3360 sensor - Omron mics (50 million clicks) -Form (previously sat on the Razer Deathadder 3500 and the shape is almost the same) -Price (including top sensor and microphones) - Coating material - Ability to quickly change dpi Got cons: -Wheel (the very click on the wheel, I use it for 5 months and sometimes (once or twice a month) when you click on, say, a link, it opens two at once, or does not open at all, but after 5-10 minutes the trouble disappears by itself) -Lid for weights (it's hard to open, maybe it's just my case)