I have a set of these myself and rate these highly.
If your looking for quality speakers on a budget then buy these!
Reviews on amazon are really good
Product Description: Logitech Z 4 - PC multimedia speaker system
Product Type: PC multimedia speaker system
Media Type: 2 speakers, subwoofer
Speaker Type: Active
Nominal Output Power (Total): 40 Watt
Audio System Max Output Power: 80 Watt
Media Included Qty: 35 - 20000 Hz
Audio Amplifier: Integrated
Connectivity Technology: Wired
Speaker System Details: 2 x right/left channel speaker - 8.5 Watt ¦ 1 x subwoofer - 23 Watt
Remote Control: Remote control - cable