Summary: This mouse is extremely comfortable and responsive to use thanks to the sculpted grip, and I'd have no problem keeping it as my everyday mouse. The default button setup is great for browsing the internet. For gaming though, I'd stick with some of the more suitable gaming mice that I have. Weights add much more control and at this price point, it should have come with it.
Summary: The G400 is a solid piece of equipment, but the MX518 already was that. The G400 has a few changes that make it an even more lethal machine. If you already own a MX518, you’re likely to be left unimpressed. If the G400 is as sturdy in the long run as the MX518, you can expect it to last a good couple of years before the click buttons start giving any issues. There are no serious glitches either that will hinder your gameplay.