Yesterday my second G600 arrived in my hands because my first one broke after I don't even remember how many years. What can I say now about this mouse. Love at first touch when I first grabbed my G600 (white) in my hands a few years ago, and it has been my only choice for gaming mice ever since. It definitely doesn't fit all hand sizes since it's big, but still, the middle button that gives you 12 additional options on your thumb is worth trying to get used to, no matter how small your hand is. With Logitech's software, I never had any issues, and you can adjust everything from lighting color depending on the game to DPI depending on the game. I had it paired with the G13, and no matter what game I played, it took it to another level. Especially World of Warcraft. And another big plus is that the scroll wheel, besides scrolling and clicking, can also go left/right, which translates to 2 more skills that you can frequently use. Its weight and how it glides on the mouse pad are very satisfying. You should know that once you get any MMO mouse, whether it's the G600 or one from Razer or Corsair, there's no going back to a conventional mouse. Finally, all mice break after some use, and at some point, this one will break too. If you buy it and you like it, get another 2-3 so you have backups because Logitech might stop production for no reason or without any notice, like they did with the G13.

WoW player here. I've been playing a lot of Raiding and M+. This mouse is simply unparalleled. The other reviews cover everything. The only thing that might give you trouble is the setup because it requires a lot of work with keybinding. I've only found a few extreme glitches (WoW can crash if rapid-fire is enabled on a key). But nothing major. This mouse is just pure enjoyment. For anyone playing games like WoW, just get this and read a keybind guide.

Update: Beginning of 2021, the left click started double-clicking (I expected the right click to go first, but the left one beat it). Also, it doesn't scroll down. Both problems can be solved at no cost if someone has a screwdriver to open the mouse and clean the scroll wheel + straighten/replace the springs in the clicks (watch?v=eDoXMJyimDU). And it has endured a lot of abuse over the years. It has taken a beating in my hands. And it will live to take more, it seems :P

Update #2: The scroll wheel was acting up due to dust (which is expected since I never cleaned it until now). I removed the dust that had accumulated on the scroll wheel and it's working fine. The buttons (left click, right click) needed the springs to be straightened and repositioned. They are also working great now. But just in case, I will replace the springs with new ones in a few days when the spare parts arrive from eBay. Everything is perfect.

It comes in 2 versions. I got the old one that didn't update and had a little issue with the special key (it took too long to give the command) but Logitech sent me a new one immediately. The mouse is the best available for MMO. I have used it extensively and the click sensation is just like the first day. The scroll wheel goes left and right (something not all mice have, even the more expensive ones), giving you essentially two additional options for buttons with easy accessibility. The side buttons take a little time to get used to and maybe someone with shorter fingers will use 9 out of the 12, but still, with the special key, you have another set! The only issue I noticed is that sometimes using the special button would freeze the mouse (as if Ctrl and Alt were pressed) and it required unplugging and plugging it back in to fix. However, this may have been an issue with the specific game in combination with my hardware and was greatly reduced when I assigned it a different function from the default one it has.

I bought the mouse many years ago, and I am writing a review now because it was so good that I will buy a second one!!

Considering how long I have had it and the usage it has gone through, in terms of quality and durability, it is excellent!! Its software is not as competitive and 'aggressive' as Razer's (I don't even come close to Razer mice, typically I want my mouse to last more than a year . . ) which I really like, it has on-board memory so you can write little scripts, and have the mouse change macros/buttons as soon as you open an application, something that is perfect for me as I love writing macros for comfort and speed, from copy/paste to anything you can imagine. All the buttons (yes, even the right/left click) are programmable, and the third button on the right is a quick shift/ctrl. The 'phone' on the sides has curves and is designed for you to know which button you are on without looking at it (incredibly convenient). Relatively heavy mouse, but I personally like it, competitive FPS players might look for something lighter. For MMO, excellent, I now press half of the buttons automatically from this mouse. The cable is still wrapped, so it doesn't break.

Finally, I would give it a 4.5/5 instead of 5/5 but Skroutz doesn't have that option, because I bought it for 60 and now it's at 80, something I didn't expect, because it's quite old now, and maybe it should have been a little smaller. For my palms, which are like cups, it's perfect, but for girls, for example, it might be too big/wide

First of all, let me make it clear that I don't play MMO games. I bought it when it was on sale for 50 euros about a year ago. It still works flawlessly! If you have large hands, the shape of it will suit you well, even if you are used to palm grip. The third button at first may confuse you, but later on, it is convenient as you can rest your middle finger on it. Its sensor is accurate and reaches up to 8200 dpi (although I doubt anyone will need more than 3000 dpi). Beautiful color customization with 16.8k colors for the side buttons, with many customization options. The scroll wheel has good feedback and precision and moves right-left. MANY programmable buttons through software. So many that I haven't managed to get used to them after a year. It is also almost impossible to easily reach all the rows of side buttons without changing the position of your hand on the mouse! Also, I found the Logitech software quite unintuitive, and I still haven't managed to understand exactly how it works and customize the mouse to my liking, exactly as I would like. Finally, its weight (133 gr) makes it a bit heavier than it should be, I think. Conclusion: if you don't play MMO, there are clearly better options! For the 50 euros I spent, I think it was a good and reliable purchase, as it turned out.