On average, I go through about 2 keyboard/mouse sets a year. It started when wireless came into the frame, but the mouse lag was too much! I upgraded too a bluetooth set a while back, which was all right to certain extent, but time it took upon start-up to recognise the mouse, then the keyboard, it was too much! Then the mx5000 came along. I had read about it a while back, and was quite interested, as it was bluetooth 2(faster than the "old" bluetooth 1) and included Logitech's new laser mouse. So I ordered it as soon as I saw amazon was selling it.
Now that its here, and all set-up(which took a while, but set itself up, joy!) I can report that it is an amazing peice of kit! Fast, precise, and designed in a way that makes the user's life so much easier. The LCD display in particular is a fantastic addition, allowing you to scroll through your playlists (I use itunes) and select your songs. It shows incoming e-mails from your chosen account, including hotmail, and, a nice little touch, shows the temperature in the room. It even greets each user by name when they log on!
The mouse is astounding! Fusing Logitechs mx laser with bluetooth makes for an incredibly accurate, comfortable, lag-free mouse for those long strafing sessions.
All in all it's an amazing package, and one which i'm sure will break my spending habits!