The mouse is very comfortable, can be used on glass surface, and has extra buttons for productivity. BUT, it has a lot of functionality issues.
First, the software, logitech options, has a memory leak on windows 7 pro. The 3 logitech options processes that run with this software, which are necessary in order to use the thumb wheel, the thumb button, the mode gesture button, and the forward and back buttons - logioptions.exe, logioptionsmgr.exe, and logioverlay.exe - keep using memory every time I move the mouse, even though I turned off analytics; there seems to be no limit as to how much system memory these will take up. Blocking these *.exe files from accessing the internet using inbound/outbound firewall rules dramatically reduces the memory usage, meaning that they are somehow communicating with the internet every time I use the mouse.
Second, running the logitech options software, which again is necessary for all of the good functional features of this mouse, causes random stuttering/lagging/skipping as I move the mouse. This is NOT good, as my work can be negatively affected by a mouse skipping while mid-click.
Third, the thumb wheel is not instantly responsive. sometimes it takes 5 seconds and a few scrolls for the horizontal scroll to respond in excel; after this, it may begin working in real time for a bit, but then it will lag again and I have to wait for a few seconds before it starts responding again in real-time. My g700 mouse's horizontal scroll option (by nudging the middle scroll wheel left or right) responds instantly, real-time, every time, but this g700 mouse uses different software, and so i'm guessing that the logitech options software is causing all of these issues.
good news is that these can be fixed with a software update. until then, this mouse is no good for me. design? stunning. comfortable? extremely. functional? not at all. Contacted support several times, and they have yet to address my concerns.…più