Gaming mouse recommendations.

[Husar]

Well, I got two cordless mice now I've tried the lag thing whacker mentions with the first before buying the second and didn't really notice anything, but then I'm a slow person which is why I stay away from games like Quake 3.

Concerning optical, alternatively you can also buy a decent mouse, I've bought a cheap optical mouse and it was really bad on almost all surfaces, my two Microsoft mice are quite a bit more forgiving, the razers work best on a razer mousepad etc. Overall there isn't really much of a problem I've noticed as long as you have a mousepad and don't go for the cheapest 5 or 10$ mouse you can find.

[Lemur]

I'm a corded mouse kinda guy. One less set of batteries to worry about, and I don't see how the mouse cord is a huge inconvenience.

I've always had good experiences with Logitech's higher-end corded mice.

[Xiahou]

Another vote for corded, here.

Logitech's gaming mice all seem pretty good to me, but personally last time I needed a mouse, I went with Razer. They're pricey, but it seems to be good quality and has served me well for years.

If you can do it, go somewhere that you can "demo" mice and actually lay hands on them. I think all high-end mice will perform well, what really will make the difference is how comfortable it feels in your hand.

[Alexander the Pretty Good]

The best mouse I ever had was a $10 usb corded logitech optical. :P

[Husar]

Logitech actually make the worst mice ever and I despise them!

Spoiler Alert, click show to read: 

That's because I'm left-handed...

The last two mice, a Microsoft and a razer krait, had their left mouse button become dysfunctional, it would just not recognize some clicks, recognize clicks when there weren't any etc. Long clicks would come and go of sorts so marking a text could be a real hassle. Maybe I'm clicking a bit too hard at times but it was a bit surprising that the Razer didn't seem to survive my clicking much longer than the cheaper Microsoft mouse I had before it.
I also seemed to get some pain in my arm from using the razer Krait for a longer time, one of those gel mousepads helped a bit nut not much, my microsoft notebook mouse 5000 and the cordless laser 5000 or ehatever they're called don't seem to cause this at all, apparently I can use them quite long without any problems.

Oh and concerning mouse lag with wireless, I suppose it's not worth than the input lag on some monitors after all tghe latter is clearly visible to me while I haven't really noticed the former I think.

[pevergreen]

Logitech MX-518.

Cheap fast mouse, with adjustable DPI settings, and programmable buttons!

(What, no I don't want to hit Num5 for that item, I'll click a button!)

[caravel]

Optical mouse: Not for FPS games, use it on a consistently coloured, stable surface. I find darker sufraces are better but anything is better than a mousemat. Do not use an optical mouse with a mousemat - especially one with logos and images all over it (this is what causes the jumpy behaviour). I've had the same optical one for about 6 or 7 years and it hasn't failed me yet.

Ball mouse: Good for FPS games because you get better control from the ball (ability to turn quickly etc). Needs regular cleaning out and a mousemat is advisable.

Wireless ball/optical: Same thoughts as Lemur, I don't see much benefit unless you want to operate the PC from 10 foot away. Also there's the batteries to be bothered about... etc.