I've been using this mouse and its predecessors since I was 14. Can't remember the name of the first one but the left click died so I went to a G pro same shape just new look and sensor so no need to calibrate it then I spilled orange fanta on it and the left and right click got stuck, then got another one this time updated with the hero sensor. That one some how the rubber on the scroll wheel expanded and locked up the wheel still used it like that since I was still using windows so I could just middle click to scroll. I was very mad when they announced a wireless version of the G pro and it has an entirely different shape then the wired version but a bit later they released the G305 and I got one for my laptop for college. I lost the mouse so I got another some how lost the receiver to that one so I just have a mouse and receiver I can't pair together in my drawer. I don't remember when I got the G305 I use on my computer I still use my G Pro wired as a spare mouse and I at some point cut the rubber on the scroll wheel so I could use it. If Logitech ever stops making this mouse shape I'm screwed.

I have tried a Razer DeathAdder before I got my first G pro wired and hated the ever living shit out of it that shape and you had to have their software running on the computer to get full resolution of the sensor if not it had the worst resolution ever you could see it jumping pixels on a 1080p screen. So that turned away from ever thinking of Razer mice.