Logitech G600 MMO Gaming Mouse, RGB Backlit, 20 Programmable Buttons, Black

UPDATE: Dropped to 4 stars because after 2 and a half years of use, the middle mouse button has crapped out. I'm in the warranty process to see if I can get it replaced (if it's within warranty), and will update.UPDATE 2: Brought back to 5 stars! The moment I contacted support, they sent out a new one, no questions asked! I'd give Logitech 6 stars if I could (although I hope the refurb one they sent doesn't crap out in 2.5 years as well).I previously had a UtechSmart Venus, which I replaced with a wired Razer Naga 2014, which I then replaced with this guy. The Venus was fine, but the Naga had cooler buttons... but it had tracking issues, which is how I ended up with the Logitech G600. Although its buttons aren't mechanical, they're large, textured, angled, and very easy and comfortable to use. The up and down buttons are at very different heights so it's easy to know which is which, and the entire mouse fits so comfortably in my palm. The one wonky thing is just the right side button (note that this is obviously a right-handed mouse), which rests under your ring finger - I pressed this a few times when using it and ended up disabling it in the Logitech Gaming Software, since 12 side buttons + 2 up/down buttons + 2 left/right scrolls are plenty enough for me now, thank you very much. However if I ever decide to automate my entire computer with my mouse, maybe I'll re-enable the G-shift function, which allows for additional side button binds. That being said, the scroll wheel is very satisfying to use and is very stiff compared to the Razer Naga's. While this isn't too great for scrolling down hundreds of pages of documents, it's very good for controlled scrolling while gaming.The software for this is probably a bit better than Razer Synapse's, which gave me tracking issues. Logitech Gaming Software is well-designed and really easy to use, and its game-detection works well as well. I also enjoy having more than just green light to choose from, as that pairs well with my Corsair K70 RGB. However, one oddity is that there is a "mode" wheel with three choices - I originally thought that that only entailed lighting switches but guess what? It's actually three button binding modes... per profile. With their own individual lighting settings. Which is excessive. Especially since there's G-shift. But you know, if you wanted 2x12x3=72 different side binds per game so you can almost type the entire alphabet out three times, more power to you, right?Admittedly, LGS isn't perfect. When I alt-tab out of games it has a habit of not switching back to the game binds until I alt-tab out and back in again. While this isn't an issue with most games, it does bug me in fast-paced multiplayer games like League of Legends or CS:GO, where I have a lot of important functions bound to side buttons. I've died or made hilariously terrible plays many times while mashing my side buttons, only to realize that they weren't bound correctly because I alt-tabbed to change my music. I think there's a way to get around this though, using Logitech's persistent profile settings or whatever. Either way it's not a huge deal.If you move around a lot but also like to take your profiles with you, you can save I think three profiles to the mouse's hardware, but don't quote me on that.Anyways, if you're looking for a mouse with extra buttons and you've got $40 to spare, get this. It's pretty great, and the Logitech software is highly customizable. It might look like a mechanical alien hiding in a shell, but you can bind the entire alphabet onto the mouse. Which is pretty cool.-Reviewed from my Logitech G600 Gaming Mouse

I have both. Both qualify as good, the G600 is Great IMO.Like others have said, the naga buttons press easier for quick button pressing, and especially for multiple button pressing in rapid sucession. But the G600 is easier to find the right buttons due to the shape and indents.I personally use all 12 Buttons on the G600, and find them easy enough to find and press easily and quick enough.The Naga is smaller, the G600 is bigger and a little heavier, i have smaller hands, but i prefer the G600. Both Glide well, I honestly think which one is smoother would depend on the Mat your using. I use a Razer Vespula, on the control surface and love the combo. I think for the Naga, the Speed surface seems to feel a little better.The Naga does have liftoff issues, however i dont lift off my mouse often. If this will be a problem for you, dont choose the Naga.The software, I prefer the Logitech, it is much easier to program, then reprogram, then reprogram again due to the design of the software. If you only ever have to program your macros and key binds once, more power to you. Me, I end up changing things a lot, so ease of use is big to me. It syncs perfectly with other logitech products which I seem to be acquiring more and more of lately.Here are the real difference makers to me.Naga has shiny plastic = fingerprint/grease/dirt magnet that really gets dirty fast (I wash my hands everytime before I use it too!). The Logitech on the otherhand is more of a textured matte type of finish that honestly doesnt get sticky or feel dirty as quickly. The Logitech basically has a similar feel to the top of the Naga, but its on the entire mouse, where as the Naga is matte/soft touch type of texture on the top with shiny plastic everywhere else. Also the Naga has been collecting a lot more dust under it and needs to be cleaned more often than my G600. I use both about the same amount, maybe the G600 a little more.The other thing is the G shift key.Boy do I love this key. It took a little bit of time getting used to, however instead of having to deal with the issues of it changing profiles and the issues that come with that (it disconnects the keys beind held already, so if you are holding L and R click, and press the G shift, the L+R click are no longer being held down because it changed profiles) I just make this my main modifier key, which for me is Ctrl. Works awesome and honestly i dont know what to do with out it.The G7 and G8 buttons havn't been a problem for me accidently pressing it, even though your fingers are always right there. They are actually quite nice, and the only times I have had a problem was basically I hit the button without thinking and wondered why none of my macros were working(I have G8 as profile Change).One thing I have to say though is, not that the G600 scroll wheel sucks, but I love the feel of the razer scroll wheels still.Last of all, Im not really a flashy guy, but I think both look good, and have the same kind of light customization that you can take as overboard or as classy as you like. But IMO the Razer looks more like a gaming mouse, the G600 most people will probably ask you just why your mouse has so many buttons.