robert, yep, the quality of the insulation is probably more important than that of the wire its self but that's nit picking. I think the USB limit is fifteen feet anyhow, so I doubt cables matter much in that length.
Depending on the type of signal being sent, there are all kinds of issues that need considering like impedance of the cable, capacitance and inductance shielding etc. Of all of these, probably the actual metal that makes up the wire is least important as long as its copper. Silver plating only matters for corosionresistance unless you're into extremely high frequencies say microwaves,which USB ain't. Tom
