Just finished the High End 2008 show in Munich and FWIW, we used ALL LessLoss AC power cords in the room. The only exception being the Cardas custom cord between the wall and Running Springs Jaco AC line conditioner. We also experimented with AC phase (easy to do with Euro plugs) and found the obvious CORRECT orientation.
I have, admittedly, not compared the LessLoss power cables to a lot of others, but I can say that for what they are being sold for right now, they are a TRUE bargain. I met the designer of LessLoss power cables in Munich and we discussed some of the design elements and treatments that the product undergoes during its manufacturing process. The proprietary aspects weren't discussed, but lets just say that this is a truly ENGINEERED product and the result of much R&D and critical listening. They have a permanent home in MWI's reference system, particularly at source and preamp!
Thanks,
Dan W.