This may start to sound like a broken record at this point, but my major and only complaint is MSI's Gaming Center software. Before I get to that, I think I should point out that MSI never states what software to download in the included booklet. It just states to go to MSI's website, which isn't very helpful in my opinion. It may seem like a nick picky thing to talk about, but a lot of people are not patient enough to sift through a website for an unknown program. This can be an easy fix by just including what software is needed, so I'll stop myself here and let MSI sort this out for future production runs. Back to the actual software. I will say that when it is working, I had a very enjoyable experience with it. However, it often reverted back to defaults when a mouse was unplugged or the computer was restarted. MSI does not include any sort of user guide or ReadMe, which leaves the user confused about what each function does. You, as an owner of one of these mice, will no doubt have to Google things to figure out how these settings play a role in the bigger picture. It is very easy to click on something or move a slider and not know it. Even worse, there is no default button (other than different profiles), which does not help the situation. Having played with all the settings, I found myself using different profiles and taking pictures to note what is default so I could compare the settings I just changed.