Haha, thank you so much for reminding me what a clusterfuck Logitech software is and that I vowed to never ever use one of their products against because of it. I was about to order it in a weak moment. Bullet dodged.
G Hub is all but superb, one of the worst UX designs history of software has seen. Be prepared to loose your mappings on update, get lost in useless slowly animated menus and screens, the mouse not working until the G hub starts (which it sometimes does not) etc. I ended up using paid third party mapping software, that's how bad g-hub is. Not to say that I have 3 Logitech periferals, and each needs a different software to work. G600 needs "gaming software", g604 "g hub", and MX keys "logi something" jukk.
Thanks to a same-day store pickup option, Best Buy's current deal for the popular Logitech G604 Lightspeed is an excellent last-minute gift for avid gamers who could use a wireless gaming mouse upgrade just in time for Christmas.