A very nice gamer mouse in my opinion, not quite perfect, but I've really just little things to complain about ..
The optical sensor is working properly at speeds of only up to 1.55 m / s (comes with a USB polling rate of> 250Hz, default in Windows is 125Hz, which is the maximum speed of 1 m / s), speeds above this gives a negative acceleration which is not desirable (source: ESReality Mouse Core 2007). 1.55 m / s works very well if you do not run with a very low sensitivity.
It is also very good in my hand and a bonus is that it looks very good.
Some (små!) negative things is that musfötterna not slip any further good, ordinary plastic feet, but there is to buy good teflon feet.
400 DPI is a bit low, not bothering me much about it in the game, but it is a bit stingy in Windows if you want precision and do not want to move the mouse very far ..
The cord is a bit distracting (thick cable), would love to drag against the mouse pad and add resistance to the movements.