My last mouse purchase was a real flop. The seem to be well designed, but for some reason when I would plug it into the usb ports on the right side of my M5 it would only work about 10% of the time, but when I used the left side usb port it would always work. Kind of annoying, but not a deal breaker. However, Logitech still hasn't provided the Vista drivers for it so you don't get any usage from all the cool extra buttons. So when I found out the new Microsoft Wireless Notebook Presenter Mouse 8000 was available I went out and bought it.
In the two months that I had the Logitech mouse, I never got a single comment on it. The first day I had the Microsoft mouse I had people asking me what kind of mouse it was and where I got it from. It is definately a nice looking mouse, size is right, and the features are great. I played around with using the mouse as my presenter with power point today and it worked very well. It also would work great as a remote control while watching movies or listening to music since you can play/pause, navigate, and control the volume all from up to 30 ft away. If your laptop has bluetooth then you don't loose a USB port which is nice. The mouse is well designed in that there is a presentation button on top that puts the mouse into and out of presentation mode which turns on the bottom buttons and turns off the normal mouse features. My only complaint so far is that the clicking is squeaky. I guess this is a common Microsoft Mouse problem.
Look for a Logitech VX to be listed on ebay real soon. :)
Note: If you want to use all the features with Windows Vista you will need to be on the beta program so that you can get access to Intellipoint 6.1 (which doesn't list this mouse during setup, but just choose a random mouse and then change it after you're done with the install, it is there).