I've had these speakers for a few months now. I travel a lot with work, and wanted speakers I could just throw in the suitcase, that wouldn't take up much room, were light, and sturdy. The Logitech mm28 are just the job.
I use them to plug into my laptop and MP3 player in hotels. Sound is great, particularly considering the price, and having a single, very flat, very light speaker to bring with you is terrific. And the thing feels indestructible.
I've bought several as presents for people, and they've all loved them.
One small point: there is no volume control on the speaker - volume is controlled entirely by the device plugged into it. Not a big deal really.