Yeah, just a bit. The right click thing I remember seeing in Advanced Warfighter.It was in several others too, but I forget which. Of course, this might only affect my model (Diamondback 3G). Others might be unaffected. But I'm willing to bet that's more down to random luck than the quality of the drivers.

No reason why you wouldn't get basic functionality from the Windows drivers. But in XP there wasn't any support for more than three buttons and a scroll wheel. There also wasn't any means to rebind buttons. I don't know about Windows 7 though. I haven't tried. It might be worth me looking into...

Thanks, assuming other mice with the same wheel work similarly, I'll probably try one of their wireless ones. Maybe the Performance MX, the MX620, or one of the M705's... bluetooth would be a bonus though, then I could use the mouse with the Mac or the laptop without bothering with receivers (not likely that I will, but just in case), as well as have a bluetooth receiver for the tower.

I recommend any brand that has a solid support network, replete with LIVE representatives that speak fluently the same language as yourself. Also, you shouldn't have to pay for anything they might call "Premium Level Support". Read as many reviews (Professional reviews, like Guru3D or BenchmarkReviews, not the pithy "This mouse sux" crap you see on Amazon or Newegg, unless of course you see a really informed review on Newegg and Amazon) as you can, and make the best informed decision you can make.
That said, I had the original Saitek Cyborg before the right button mysteriously stopped responding. Before that happened, I was very pleased with it. Since then I've been through a CM Storm Sentinel Advance (Crap, but not for lack of bells and whistles), and a Logitech G9x, which I find form fitting to my acromegalian phalanges.
Also, the G9x used to have additional grips sold separately, some with pictures, some that were shaped different than the two included with the mouse. I don't know where to get them anymore.

I highly recommend the MX620. You might like another shape better, but for me it just feels natural in my hand. And once you've had a mouse with Microgear, you'll never go back. I usually switch the gear on for games where you switch weapons using the wheel, and it's excellent for that, but where it really shines is when you are in a "scrolling" environment (browsing the web for instance) and you switch it to frictionless. For me as a programmer, it's indispensable. It makes navigating large code files, databases, etc. so much easier.

I have their newest mouse, the Imperator, and it's working perfectly so far.

i've owned four razers on three different operating systems and loved them so much. they feel better than any other mouse out there. pay attention to the mouse shape, that makes the most real difference. i like to clasp my palm around a mouse so i'm in love with my deathadder, but people who like to use their fingers to steer the mouse and elevate their palm go for a copperhead. razer has a guide to which mice are for which grip on their site and it's actually quite handy (PUN!)
don't buy a refurb or used one, though. it never works out.

I use Razer Copperhead, the mouse works without installing additional drivers and stuff. But if you need more functionality, you can install the drivers which work 100%.
Go for Razer Deathadder, if you can find the 3500 dpi version. That mouse is probably the best in the business.
For wireless mouse, the Razer Mamba should be your choice.

This topic actually brought me back to my quake-playing days; and the time when I just had to purchase a new and better mouse to, eh, better my aim.
This was before Logitech broke into the business even, before optical sensors and lazors and gram weights and shit, and I remember the mouse to get was some Microsoft mouse. Complete with a new felted mousepad. Noobs were pwned.

I don't understand the StarCraft II mouse pads they're selling. Sure, I would love a StarCraft II mouse pad, but the description talking about "non-slip rubber base" and the idea of a tournament-ready mousepad is preposterous. I have my Alienware mousepad that came with the computer I bought 3 or 4 years ago and that still works just fine!

That the Steelseries pads? They're great, but yeah, all those fancy words are just talk and thick marketing mayonnaise to lure the kids into buying. Even $3.50 mousepads are non-slip these days. The difference between a glass and a plastic pad is in practice ... not that much, as long as it is a smooth, clean surface, although the plastic pad will wear sooner and has a propensity for wrinkling up around the edges.
My WoW collectors edition pad is still working fine, actually.

I kinda gave up on upgrading my mouse. I need a claw-friendly mouse, and there don't seem to be very many of those.

FYI, here's a recent Mouse comparative,

I suggest this one.

I have to second all the recommendations for Razer Deathadders. I own one at home and an older model at work. At work it's even running on Ubuntu 9.04 so you don't need the drivers. They are super fast if you like gaming, it actually keeps people from trying to "drive" at work, which I prefer:)
At any rate, read the Razer site and find which mouse is for you. Do yourself a favor and spend 20 bucks on a decent gaming mousepad. It's worth it, I like Ratzpadz myself but it's a matter of personal taste.
Also, I really dislike wireless mice, but if you really want one, I think Razer has you covered (best to check reviews, I've never tried any wireless products they may make).