I been purchasing the PS Audio Power Punch cords as of late. They're reasonably priced and a good solid 12 guage RFI/EMI rejecting cord. I can't see spending buco bucks on power cords since I don't have too much current draw other than my 42" Plasma. Living in an apartment, I keep the sound to a minimum unless I know my neighbor isn't home.

My system:
(1) 42" Panasonic Plasma Television
(4) Trends Audio TA 10.1 Class T amps for 7.1 surround sound
(1) Sunfire Subwoofer MKII
(12) Orb Audio Speakers and counting
(1) Oppo Digital DV-980H Universal Disc Player
(1) APC H10 Power Conditioner
(1) PS Audio Duet
(1) PS Audio Quintet
(2) Harvesters (soon to be retired)
(12) AudioPrism QuietLine Filters (retired)
Harmonic Technology Interconnects & Anthony Gallo Solid Core Speaker Wire
ERS Paper, Highwire Power Wraps, PS Audio & Transparent Audio Power Cords