The Logitech G7 can be found on their website. I live Canada and had mine delivered about two weeks ago. $100 w free shipping.
I really like the G7. The ergonomics are great, I run mine on a Razer Destructor pad.
http://www.dvhardware.net/review141_razer_destructor.html
Great sensitivity that can be customized, the left right wheel tilt can be programmed for any key, so doing an action, say drawing a knife or changing a seat position, can be done in a fraction of the time it takes reach a key or a button on the side of the mouse. This has saved my life and cost others theirs many times.
I have made two fantastic sniper shots using this mouse. I set it on the highest dpi and use that to quickly scan/move. Once I have acquired a target, I can then drop the dpi and really get a good rock steady shot.
It's cordless. I will never use a corded mouse again. I can not stand the feel of the cord dragging. With the G7 teflon feet and a gaming mouse pad, the motion is truly fluid and effortless. As close to no resistance as you can get.
It includes two batteries, and as long as you keep flipping them, you will never have a dead battery. I have never had to use the boost mode and have never been without a fully charged battery. The charger is completely unobtrusive and mine is within arm's reach.
I have been caught in mid game with a dead battery, but that is my fault. It only takes about three seconds to change the battery in panic mode.
I looked a t buying a Mamba, but with no programmable scroll wheel and the price, I went back with my G7.
I did have the glitch where sometimes the pc would not find the mouse on start up and I had to un/replug the usb cable. This was a pain as like most people, the back of the pc was at the back of the desk. I still think the G7 was worth the hassle of this. It's not like it died in the middle of something, it only happened at start up.
I have not had this problem with the new mouse.
Keep people with lemonade away from your mouse. I will guarantee that this will lengthen the life of your mouse.
I now have a new base and two new batteries for spare. The old transmitter stick did not work, nor was it expected to. The new stick works well in the old base. As I have not had any transmitter problems, I think Logitech quietly fixed that problem.
See you on the battlefield.