I had a Razer Lachesis for a long time, have a Lycosa keyboard that works like a fucking dream still.

The Lachesis sorta just crapped out, however when it worked it was the best mouse I ever owned, tad expensive by Razer products are worth it.

ALSO have a Razer headset that I've been using forever as well. The only problem I have with that is sound seems to bleed into my mic even if it's not around my neck like it can occasionally be. But other than that sound quality is great, stereo sound that has helped me seek out the heavier footed nubs in my time and a quality mic that should sound crystal clear if you have no feedback.

I now have a Logitech marathon, 40 bucks is a great price for a 3 year battery life and gaming precision laser. Also wireless... and the leave in USB receiver is like as big as a penny... and can be stored in the mouse's battery compartment... did I mention it has like 8 mappable buttons ? and also a "Hyper scroll wheel" that is pretty much just a free spinning mouse wheel that you can toggle on and off good for scrolling on big documents and long ass webpages.

Only problems I've had with it is when I dropped it and the left mouse button popped out of it's base, causing it to miss-click and interfere with the other mouse button. Fixed it by simply lifting it gently and placing it re-centered on top of it's little rubber button base.