First of all: Set your Forward/Back buttons to "Other" - "Generic Button" if you want them working in all applications. I had lots of problems with Forward/Back in Microsoft Visual Studio and related products. I almost considered going back to my old mouse until I found this fix.
I played a lot of World of Warcraft recently. What I noticed there, is that the battery is drained a lot faster compared to normal office use. This is probably caused by the constant holding of one button (you hold a mouse button to rotate view or change running direction). In this scenario the battery lasted only a few days.
After being stuck in a dungeon without any mouse control, I connected my old IntelliMouse Explorer as backup mouse. The quick recharge rate allows you to charge to half an hour of use from completely empty in just a few minutes (cigarette break).
Following image from Logitech PR illustrates how much of a difference the laser makes compared to a conventional LED:
Please note that the CCD sensor in the MX1000 is the same as in the MX510. It has a resolution of 30x30 pixels and a "processing" rate of 5.8 MPixels/second. 5,800,000 / (30 * 30) = 6444 images captured and processed per second. Not bad. The MX300/500/700 samples 5250 images/second.
The movement information is broken down into a stream of 125 packets/second to the host pc. Typical cordless mice run at 60 packets/second or less.
I can only confirm this. The mouse is very precise and the pointer is moving REALLY fast.
The RF radio range is just awesome. I could move the mouse pointer with full accuracy even when I was over five meters away, through a concrete wall.
UPDATE: On Feb. 6, the mouse battery readout was "stuck" at the 1 green LED on setting. I recharged it overnight and it stayed at this setting. A reset of both the docking station and the mouse fixed this.