Well, Im finally looking to upgrade my mouse. Im not sure about logitech. I like the mice they have but I remember how much I liked Razer Mice too. I know I am definately getting a Logitech Trackman Wireless ( Battery life of 18 months) to replace the old one I have that the usb cable broke within the cable. I would love the Razer Mamba but it is still like $130. Please, I have a G5 right now and would like to upgrade. I need help, I don't want to drop x dollars and regret it.