According to first impressions, it was done soundly, and will last a long time (this is why I took it) Everyone criticizes the software for setting buttons, which I do not understand if you buy such devices, then it is assumed that all the same in trouble with the computer, and should be able to understand the interface to configure this device Quite comfortable It takes a little getting used to all the additional buttons in the latest models they began to put magnetic latches, which is quite convenient It is also not clear why the wheel is scolded, supposedly too loud and its not smooth rotation Yes, not quiet, but the return is pleasant And about not smoothness, there is a scroll mode