I bought the Logitech VX Revolution when I purchased my MacBook in the final days of 2006. I needed a notebook mouse and I'm extremely picky when it comes to pointer lag from wireless mice. The first wireless mouse I ever found to be better than a wired was the Logitech MX1000, which I can still tell has insanely small amounts of lag, but it is so close to a wired connection I can't complain. The VX Revolution, on the other hand, is the first wireless mouse I have ever used which feels so responsive that I would never be able to tell the difference between it, and a wired version (if a wired VX Revolution existed). I haven't used the MX Revolution, which is the desktop version of this mouse (with a couple more features), but I must say, the VX is the best [insert random expletive here] mouse I have ever used. Even though it's built for portability, I could easy replace my MX1000 with the VX as my desktop mouse any day.

I have used this mouse for 90 hours [and] until this week, the battery meter has shown a full charge

One of the VX Revolution's main features is the micro-gear scroll wheel (or whatever it's called) which allows you to switch between a tactile click wheel and a free-spinning wheel, which is a neat feature but I never found myself actually using it. On the VX's larger cousin, you click down on the wheel to switch between wheel modes, but on the VX the switch is under the mouse. You actually have to lift up the mouse to swap modes. While I understand the need to move the switch due to size constraints, this feature probably could have been left out of the VX Revolution. It would be quicker to scroll through long documents with the click wheel than to flip the mouse over, throw the switch, flip it back, scroll to what you need, flip over again, flip the switch... again... and continue using the mouse as usual. You could just throw the switch and always use the free spinning wheel, and I tried that, but then you loose the precision of the clicking scroll wheel when you need it. Also, due to the extremely low friction of the free-spinning wheel, any accidental touch sends pages flying by.

One feature of the VX Revolution that I really enjoy is the USB receiver which is smaller than most flash memory drives and is stored inside the mouse when not in use. When ejecting he receiver out of the mouse, the mouse automatically powers on, and when inserting the receiver back in, the mouse automatically shuts off. There is an additional power button to turn the mouse on and off when the receiver is plugged into your computer, but the automatic power-down makes sure the mouse is powered off when you throw it in your laptop bag, thus saving battery life in case the power button is accidentally pressed. This brings me to my final point, which is actually the reason I'm writing this...

The battery life of the VX Revolution is amazing! Logitech claims that the mouse will run off of a single AA battery for 120 days (not straight, this is an estimation from average use). Well, I have been using this mouse for a month and a half for roughly two hours a day if I estimate an average, which would mean I have used this mouse for 90 hours straight (and about half of Logitech's estimated usage). Until this week, the battery meter has shown a full charge (3/3 status LEDs) and just the other day the power meter went down to 2/3 LEDs. I have to charge my MX1000 once every two or three weeks, and my VX Revolution has gone for a month and a half, with what looks like two or three months left assuming the acceleration of the battery's drain remains constant. We'll see how it goes and I will be sure to post when I actually have to replace the battery in this mouse, but so far, I'm quite impressed.