I have both the PC Works and the Altec Lansing ACS-33. The only drawback to the Altec Lansing is that the wire connecting the satellites is pretty short, only about 4 feet long, so it limits your separation. The PC Works give you about 15 feet of wire between the satellites, as well as a remote volume control. My boys think the ACS-33's sound a little better and I think the ACS subwoofer is a little stronger than the PC Works. Overall, I would say it is a tossup. Either set works great, IMHO.
Chuck