Since this has been resurrected:
Been using a G900 for a few months now, can confirm it is that good.
I didn’t intend on using it wireless, but decided to give it a shot. I have not had a single problem with the wireless. I never want to go back to having a cord.
I expected it to be a brick like a G502 (168 grams), but it is really light. (And I used to use an Abyssus, which is no-frills, light as possible at 71 grams.) G900s mass in at 107, which is pretty reasonable to me.
Battery life is a bit short, but I also don’t turn mine off because I’m lazy. Still lasts 2 days between charges.
It’s also ambidextrous. I grew up playing games on the same setup as my left handed brother, so I am very used to having ambidextrous mice, to the point I probably wouldn’t have gotten it if it wasn’t.
It’s a pricey rodent, but absolutely insane considering what it does. Assuming I don’t have any technical difficulties with it or break it by being a moron, I’ll probably be using it for years.