I can't stay away from this thread, since my two largest lists of "favorite URLs" are cycling (lots of years as an amateur racer) and audio (about as many years listening to music). One can get a bicycle for $200 (Walmart), $3K (lots of very good race bikes) and $8K and up (top of the line pro race bikes). There is a huge difference between the $200 and $3K bikes (weight, precision of components, efficiency of the frame) but much less between $3K and $8K. But even between the $3K and $8K bikes, there will be (small) differences in weight due to the quality of the carbon fiber, and aerodynamics due to the carbon fiber wheels. Now lets try and apply this to power cables. First, just as with bikes, there must be a point of diminishing returns, at which point the improvements become very small, possibly insignificant (in the bike case, 99% of the time the same rider would win on either the $3K or $8K bike). So we would love to know where power cable diminishing returns set in. One can buy or make the well-regarded (at least in the AA forum) Audio Asylum PC (shielded Belden wire, Wattgate or P&S connectors) for about $70, and I don't know how much difference there is between that and a $1000 PC (I use the AA cords). Also between the bikes one can measure the differences that money buys in weight, aero drag, and bearing friction; unfortunately with power cables the differences are restricted to what the buyer hears, there is little measurable difference other than wire gauge and resistance (which definitely don't correlate with price). It will always be difficult to compare one case where differences are entirely subjective (power cables) with another where they are largely objective (bicycles and to some extent active electronic components).