Just to put things into perspective for DIY cords, the DH Labs Power Plus cable can be bought for $8.00 per foot. The connectors on the pre-built DH Labs Power Plus cable are Wattgate IEC 320i ($24) and Wattgate 5266i ($16). All you need is a Phillips screw driver and wire cutters/strippers. Probably about $20-30 in tools. The only thing that would be missing is the fancy tech-flex cover on the cable and the printed "DH Labs" heatshrink tubing over the cable.
http://www.silversonic.com/docs/reviews/AudioXpress_Pro_Studio_Power_Plus.pdf
The Wattgate connectors use brass conductors. The brass conductors have a very fast/strong current. This translates into very fast/clear music. The brass do have a tendancy to "push hard" on the voltage. This can cause a system to be too strong/fast and can push it over the edge into the solid-state/harsh/sterile area. The Wattgate brass connectors are very decent connectors for the money. However, be aware of their character. It may be good for compensating for systems that are very soft or laid back. It puts the "snap" and attack back into the system.
In my opinion, the Furutech gold/rhodium are much better conductors, depending on what you’re looking for. Gold plated if you want a smoother and more laid back sound (warmer). Rhodium plated if you want deep strong power punch bass and very high resolution in mids/highs.