I use that speaker wire. Works fine for me. But, your probably better off with home depot, Lowes, or another generic 12g wire. Only reason I went with the AR is because I get it very cheap. (employee discount)
does it hurt to have 16guage instead of 12?? I bought 16 from the advice of the guy at the store that I bought my receiver from. He said sice I had long runs (20 feet ish) that 16gd would be better.
typically, the longer the run, the thicker you want your speaker to be. the lower the gauge number, the thicker the wire.
get the thickest you can...better safe then sorry. home depot wire is pretty well recommended. i also hear soundking (?) has some pretty good deals.
i run 12g to my mains and center, but for my rear's i'm using that monster xp stuff...which i think is probably only 14g at best. tbh, i don't hear much of a difference one way or the other.
in any case, get the thickest you can.
Parts Express has a 100' spindle of 12ga speaker wire for $40 (shipped). I've bought two spindles of it now and their service has been has been extremely fast. I ordered a spindle at 2pm on a Thursday and it was in the mail by 5pm the same day.
Here's a link: http://www.partsexpress.com/pe/showd...=2792&CATID=56