I received it today so my opinion may not be complete after a corsair raptor that left me completely unsatisfied and I cried for my money. I can say that it is much superior, of course not compared to others like the logiteck p, which I was a user of, but for its price, I can say that it is excellent. In my hands, it is comfortable, with a nice design and a nice scroll wheel, which is perfect for FPS or MMO with 4 speed increase functions, which is also great. It bothers me that the LED lights, besides red and green, the other 2 colors are not visible, so I get confused (until I get used to it). I consider the measurements of the side buttons to be average, they are very small and thin, so I confuse or lose them, maybe for a user with big fingers it is not even a problem. The double click button is far away from the thumb, I have to hold the whole mouse up to press it or turn it somehow to reach it... and imagine that I have long and thin fingers. Also, in the photo, the weights are shown, which are not provided (it is stated in stores that they are not provided). But none of the designers thought to close the holes below that lead to the circuit board??? It is completely exposed to liquids or residues, whether it's food or dust, hair, etc... so... I think it's worth the money for what it offers, with its highlighted flaws being the double click button and the gaps for the (round) bars in the photo, maybe these make it "unreachable" for all the other things it offers. I can say that it leaves me satisfied if it lasts more than 6 months without problems, especially in the scroll wheel, as everything breaks there, I would buy it again without hesitation.