You said "The purpose of getting a more expensive mouse are the additional features. If anyone purchases a mouse because "it's response rate is faster than an average mouse" is just stupid. I have a Razer mouse and it vastly exceeds in my performance criteria than the standard Microsoft Intellimouse." I totally agree. Who are these people that did the study anyhow? Are they gamers, did they talk to gamers about why they use Gaming Mice? Another pointless study.

I've used different mice, and I have seen an improvement in my gameplay depending on the mouse. I recently purchased a Zalman FPS Gun Mouse. It took a little getting used to, and I don't really like it for anything outside a FPS, but my accuracy did go up once I got used to it. Now this may have someting to do with the way you grip that mouse, but I think it also had a lot to do with the fact that you can switch between 3 different dpi settings with one button as well as the versatility of the various buttons on the mouse. I agree that its best to use whatever mouse your most comfortable with. $12 office mice just don't offer all the features the expensive gaming mice offer and those features make a difference in gaming. If all I did was check my email and write memos in word, then I wouldn't really care about what mouse I used. However a 13 button gaming mouse is great If I'm trying to heal up 5 team mates in Arathi Basin in WoW while kiting a Rogue, healing my self, AND keeping an eye on our flag, I'll take all the features I can get. I think the point is, Gaming mice offer features tailored for gaming, and exactly how useful those features are depends on the user and the game they are using the mouse with.