I agree with much of the above. Do not spend an extra $ on anything that is overpriced for its so called "acoustical qualities".
Do however consider the practicality of the wire. I once bought a large amount of 12g speaker wire from a local hardware store for the longer distances during my house build. It was so hard and inflexible that it was near impossible to work with. I cut my fingers a couple of times trying to work the ends before giving up and throwing much of it out.
I ordered 12g inwall from Monoprice and it was a complete joy to work with in comparison. Also, even with duty, the price was comparable to the crap at the local HW store. More than worth it to offset the frustration and blood loss.
