The geometry of this mouse was almost completely copied from my favorite Logitech VX Nano, so as soon as I came across this model, and even in white, I immediately bought it. Before that, I used the Logitech G305 for some time, which did not suit me with its size and very loud click, but there is not much choice among white wireless mice with high-quality sensors. The accuracy and response of the Razer sensor will be slightly worse than the G305, but only a little. So here is the overall score. Razer battery consumption is monstrous, especially compared to Logitech, who taught me to change batteries no more than once a year. In Razer I use 2 pairs of batteries, which I change about once every 2 weeks. By the way, now I use AAA batteries through adapters - otherwise I didn’t like the weight distribution with AA (there was a noticeable advantage on the back). But with them, too, the mouse did not live much longer. The range is negligible. It's good that my radio adapter is next to the mouse. As soon as it is moved to the back side of the monitor, or the back side of the system unit, it stops working stably. The most serious flaw. Now let's go over the positives. There is built-in memory (although in many places they write that it is not). Putting this monstrous software from Razer on a working system is completely optional. You can set up a mouse on a virtual machine and then safely use it on any system. All functions will not work, but sensitivity, modes, button reassignment - everything is remembered. A big plus for me is that it disassembles in a minute a little less than completely. No need to tear off the legs (finally at least someone did it!). It is enough to remove the cover, pull out the soft plugs, and unscrew the 4 screws (Torx T6). As soon as I tested this mouse, I immediately bought a second one - for work. Then I found that one wheel spins a little nicer, while the other clicks a little quieter. Dismantled, swapped wheel blocks. The house mouse has become perfect. Bottom line: according to personal feelings, I put the top five, but objectively it is necessary to reduce the score for problems with communication. So 4.