This would not be a good solution for everyone, but in my system, I don't use a power cord to feed my UO!
I have a dedicated line (12-2 w/ gnd) coming from the breaker panel to a junction box in my crawl space directly under my gear. I split it into two feeds coming out of the junction box, and bring them up through the floor under my equiment rack, and I terminated them with Marinco IEC connectors. I plug one directly in to an UO, and the other into a P300 Power Plant. The UO powers my Martin Logan electrostatic speakers, and the P300 feeds my source and pre-amp. I have another line (10-2 w/ gnd) that I brought in directly, and terminated with a Schurter 20 amp IEC that feeds my power amp.
As I said above, I would not recommend this to everyone. Obviously, if you rent, it's probably not a good idea. In addition, since you probably won't be able to talk an electrician into doing this for you, you will need to be confident in your ability to do it without either electrocuting yourself, blowing up your connected equipment, or burning down your house. That said, it provides ultimate simplicity, and reduces the number of connections in the path, which by definition reduces the possibility of having faulty connections (if done correctly).
On the other hand, you could probably pick up a 1 meter original PS Audio Lab cable pretty cheaply, and I would think that would work quite well.
Mike