Power cords for Dell computer and Mackie speakers

In my PC system, I'm using a Dell PC feeding a Nuforce Icon via USB. The Icon's headphone amp is then feeding two Mackie speakers (since Mackies are powered, I'm using the headphone amp so as not to blow the speakers).

I have upgraded the power supply to the Icon. Now, I'm looking for power cord recommendations for the Mackies and also for the Dell.

Any suggestions? I can live with spending $1,500-ish for all three power cords together. The Dell's cord will only need to be 1 meter; the Mackies will need 1.5 meters.

Thanks in advance for your help.