These days the traditional mouse doesn't cut it. So here are my suggestions for buying a mouse. <u>Ergonomics</u> This is the most important part of buying your mouse. No matter what features a mouse has, its crap if it doens't feel good in your hand. I suggest going to your local CompUSA,Best Buy, or other computer store to feel how the different mice feel in your hand before buying. Your not going to be able to frag the guy in front of you if you have to move your hand to press the fire button. <u>Optical vs. Ball</u> I personally would recommend optical over the ball mouse. They tend to be more responsive overall, and you don't have to clean the rollers (you have been cleaning the rollers on your ball mouse, RIGHT?!). If you get an optical mouse, you can choose between regular and dual sensor. One sensor should be fine for most people, however the most hard core of the gamers will want two optical sensors for higher resolution. The other thing with opticals is that if you have any strong light sources aimed directly at the optical sensor it will mess them up. And they won't work through glass. <u>Cordless vs Wired and USB vs. PS/2</u> USB vs PS/2 isn't that big of a choice right now, besides most mice are USB and come with a USB to PS/2 adaptor. However I have heard that USB is better if you plan on gaming with an FPS of 40+, however I think there are utilities that can fix that, I'm not quite sure about this so if someone a little more knowledgable would like to add something about this I would be most happy. Anyways the other use for PS/2 is it is still used a lot in KVM switches, so if you plan on getting a KVM switch, make sure it comes with the USB-->PS/2 adaptor, otherwise you'll end up paying a premium for the USB KVM switch. As far as wired vs wireless, go with RF or bluetooth if you can for wireless. However you may not want wireless, because if your batteries die in the middle of that big Quake Tournament, your screwed. Also there may be other objects that will interfere with your wireless signal which could cause problems. <u>Scroll Wheel</u> I personally hate mice without scroll wheels. Good mice will have a scroll wheel that will also double as a button. The scroll wheel is nice for scrolling web pages, and documents in word, and also is a god send for changing weapons in First Person Shooters. If you can get a scroll wheel. I personally don't like the scroll wheels on Microsoft mice because they feel loose to me. The logitech you get more of a click when you move the wheel.