I can't speak for the 680s, but I bought a set of the 560s and had to return them twice for problems with the power supplies. When they work they're great speakers, but they're definately not perfect.

Logitech International SA shares plunged 6 per cent on Tuesday (Oct 26) after the computer peripherals maker reported a steep fall in operating profit and said it was facing "unprecedented" supply ...

The keyboard always works fine but the mouse runs out of batteries wayyy to soon. The first set I had the mouse went fine for like 2 months, which is what its supposed to do. Then, the next set of ...