Power Cable - what´s your best?

Check out Ven Haus Audio (www.vhaudio.com). They have several cords at or below your price range, and they're uniformly excellent. Lots of press on them over at Audio Asylum.

If you can tolerate an odd appearance, and having to spread apart four strands from component to wall socket, the Mapleshade Records Clearview Double Helix Mk II Plus Version Power Cord for $285 list price new is just a wonderful performer.
If it looked like and deployed like the competition then it would be a simple sell based on sonically meeting the criteria you value. Has never failed to elicit the best out of any components to which I have attached them. And, you gotta memorize the proper name for it if you join the club :>)

PS Audio Prelude and above
DH Labs Power Plus

Check the K-works empowered cord (a real sleeper). I also like the van den hul hybrid even though it is meant for amps.

I agree with Hooper on the VH Audio PC's ...I have four of them and think they offer a great value, not to mention absolutely great sound as well!!...I would recommend a Flavor 4 for your situation...good luck!