Is the stuff from home depot good enough. And I dont mean the pre packaged kind. Also is the difference in inwall only for building codes. Or is there some other property that will make sound better since its ran through the wall. I am planning to 50 foot runs for surrounds and I am planning on 16 gauge. The speakers are def tech bp1.2x so I dont think they require alot of juice. I am planning on starting this tomorrow and I would hate to pull the wrong wire. Thanks for your help.