Best in wall speaker rated cable

May have been posted before but at a loss here as most are higher than preferred gauge and quality for say a 30' run to a Revel speaker. 13 ga is the lowest I've found which is an Audioquest. Any suggestions would be very helpful.
I use Monoprice 12 guage CL rated speaker wire (CL = UL rated for in wall use).
99.95% pure copper, well made with good quality outer jacket, flexible and very reasonably priced.
It comes in 2 and 4 conductor configurations.
2 conductor wire is $33 for 100 feet (ID # 2817) and $83 for 250 feet (ID # 3844).
I've used this 2 and 4 conductor wire in countless installations without any issues what so ever.
Highly recommended!