In wall cable

Can anyone recommend a really good in wall cable that would pull easily and be at least 12 ga. ? Needs to have a very durable long lived jacket.
I am just getting ready to install two additional dedicated lines in my sound room. I bought 200 feet of this.
Elescher,...that looks interesting though the link above did not work until I tweaked it a bit;

It looks in-wall rated at seems to be 10-gauge. Let us know how it works for you as it could be a nice, more cost effective alternative to Romex.