Something about my current computer setup is amiss, judging by the pain I experience in my mouse-arm, all the way up to the elbow sometimes. And it is specifically the mouse that is causing me problems, not the keyboard. But I remember in my teens, though, when I was more into video games, that I could spend all day, everyday clicking away at world of warcraft or call of duty, and I never had any problems back then. I might get into gaming again one of these days, but I know that my ergonomic, cheapo vertical mouse from eBay probably wouldn't do the trick. What are some good mouses for videogames, considering bang for your buck as well (meaning that I'm probably never going to be so into it that I want to drop $100 for a mouse). Are there any good vertical mouses for gaming? Which is preferred?