Gary, This is the cable that i use for my towers and center channel.http://www.av-outlet.com/index.html?target=front.html&lang=en-us
i use these cables because they are not that expensive and like you pointed out with the 10gauge wire there is a lower resistance.
DC Resistance: 0.95 Ohm/1000'
• Rac @ 1KHz: 1.971mOhm/ft
• Capacitance @ 1KHz: 17.5pF/ft
• Inductance @ 1KHz: 0.179uH/ft
The spec's that i look at when looking at cables. are resistance, inductance, and capacitance. The inductance and capacitance are determined by the material used to insulate the conductors. the lower the inductance and capacitance the best.
If these two variables are 0, then there will be no altering of the AC signal being transmitted across the cable.
These cables replaced a pair of semi high end monster cables.
These are the cables that the 10gauge cables replaced.http://www.monstercable.com/productdisplay.asp?pin=62
I like the 10gauge cables much better, one thing to note Monster does not put any specs at all what so ever on their website. Not even the gauge of the conductor..
What amp are you looking at? if that is a 5 channel amp rated for 400W per channel, it should be HUGE if it is a class A or A/B design.. If it is one of the newer digital amps, then it could be smaller..
Btw, my large 2 channel amp has a power cord that has 10 gauge conductors.. The thing is 2X as big as my thumb... That is a pure class A amp though.
I bought the 10 gauge cables that i did, because they do not really cost much more than 12 gauge..
I hope this helps a bit Gary.