The only very weird slight criticism I have, is that while it's awesome that it's ambidextrous, having m4 and m5 buttons on each side that you can install or remove your liking, for some reason if you have both sides installed, it will only let you mirror the key binding for the m4 and m5 buttons on each side respectively. There's no way to have the off side give you two extra out of the way buttons for less needed functions. Weird limitation, but I'm probably one of the few weirdos who actually want that.
That's good to know, as I started to consider one of those for the lighter weight and improved battery life compared to the G900, and the possibility of using a powerplay mat for wireless charging (though it's not ideal for my setup).
I use that feature on my G900 all the time. I leave mouse 4/5 at their default assignments, but on the other side I have the forward button bound to mouse 3 rather than clicking the wheel, and the backwards button set to shift the DPI to 800 (for things like menu control if I am using high DPI in a game).
This is the one frustrating thing about Logitech really: they update products individually.
The G Pro does not replace the G900/G903, but they have not updated the G90X with the new "Hero" sensor that brings significant power-saving improvements; allowing for better battery life, or reducing the size of the battery to cut back weight.
Also the G603 uses AA batteries
Oh, that's great. I didn't know they had released a mouse with their Lightspeed tech (and the newer "Hero" sensor) which would run off AA batteries.
I still keep a G602 around because of that, as it sips power compared to the G900 - especially if you switch the mouse to its power-saving mode (125Hz polling). I really like that I only have to swap out the batteries (Eneloops) instead of charging that mouse. The main downside is that AA batteries add a lot of weight (relatively) to a gaming mouse.
I know that some mice have actually included optional weights in the past, but FPS gamers at least tend to prefer the lightest mouse possible. Many even complained about the weight of the G900/903.
How's the range? My desktop PC is on the floor, besides the desk. Will I need to plug the receiver into the extension cable or does it handle some distancie fine?
If the receiver is connected to a top USB port, rather than a recessed one on the back of the PC, I'm sure it won't be an issue.
