I have been using Logitek devices all my life, but I decided to take a chance and buy a Razer Naga. A rare %@#$% I tell you, it's beautiful - I don't argue (stickers, a box are all right). But the quality leaves much to be desired, and the ergonomics are very, very poor. The side buttons are located very inconveniently. Well, I changed my Chinese craft from Razera to this miracle device. I brought it from the store, of course, half an hour ago, but I already tested it. No backlash, no creaking, excellent button layout. In general, happy as an elephant. Logitech did not disappoint, half an hour is certainly not a time :D but the same half an hour was enough for me to decide that I would never buy a device from Razer again. I'll report back after a couple of months of use. : more than a year has passed since the purchase. The mouse is like new, does not play anything, does not hang out, a good device. : I filled it with barley drink, decided to dry it, used DataVac ED500, and it blows be healthy, blew the resistor off the board - the wheel failed: D, I bought G502, then my hands reached - soldered the resistor and the mouse was back in battle. A little bit completely rubbed for so much time poyuz. In general, for so many years, almost like new. Logitech did not disappoint.