been using this mouse since it came out, and i gotta say its the best mouse ive ever used and is probably my endgame mouse, at least for a long time. especially with the new 4000hz dongle razer just made. super high quality materials, excellent battery life and weighs 60grams. it is the gpx killer and with the ridiculously overkill sensor they put in this thing, i believe it will get even better with more software updates and support down the road. it is pricey but i believe it is worth it. if you somehow find this thing below retail dont hesitate to purchase. it wont let you down.