I'm currently still using my Logitech DiNovo keyboard combined with the MX1000 laser mouse. Both are Bluetooth, so also the mouse. (the Bluetooth version of the mouse was only available in this set, never as a separate product). But my mouse had been acting up lately. No Bluetooth issues (sorry Matt ), but simply the left mouse button that is starting to show signs of wear since clicking it sometimes fails now. Especially click and hold (like eg. to move a window) often fails now.

I absolutely love this keyboard and mouse set. The best I've ever used, hands down. Sure, the Bluetooth has acted up once in a while (say every couple of months, I had to re-connect the Bluetooth connection for some reason - but never enough to put me off it). I've customised the buttons of the mouse to my liking and this is what keeps me using it. If it were possible, I'd simply replace the mouse. But they are not available anymore, and as said the Bluetooth versions were never sold separately to begin with. They are some on Ebay, but only as used models and the included pic does not show them in their current state so I don't really trust that.

So I'll probably continue using my DiNovo keyboard and have a look at a new mouse. My best bet is probably the Performance Mouse MX which was already mentioned here, but it seems it's got fewer buttons to customize. Tough choice...