Which in-wall speaker wire


I am in the process of finishing my basement, drywall will start in a few weeks, so I need to get all the speaker wire installed. I am looking at doing a mid-level 5.1.4 system (~5-10k for receiver and speakers). Will speaker wire make a big difference on the sound? I know on my 2 channel listening system it does, but I am not sure on surround and ceiling speakers. I have tried to research it but I have come up empty.

Also, I am interested in doing a 7.1.4 system, but 1 side speaker can go in the wall,  the other side of the area will be open to a bar area. Can I install a directional ceiling speaker on the side and get the same (similar) listening effect to balance the opposite side in the wall? Or should I just stick with a 5.1.4 set up? I prefer to save time and money if its not going to sound right.

Thank you,
Justin
weiky
I always try to keep my speaker wires away from regular electrical lines, nothing worse than firing up a system to get a bunch of humming. I just wasn't sure if wire like audioquest will really enhance the sound coming out of surround speakers or not. 
The main issue you don't want to face is humm.  Shielded cable helps a ton.  I would be more worried about crossing over any other wires or sources that could cause issues.
My Magnolia shop used AudioQuest SLIP 14/4 and used two conductors per channel. SLIP also comes in a DB version that uses higher purity copper. I'd probably use it if I were using it for front channels.
I probably would use Mogami W3103. It is professionally engineered for the purpose but not priced for audiophiles. It should be fine within walls; I don’t think it’s rated for plenum use, if that matters to you.

P.S. The Belden 5000-series cable from Blue Jeans Cable also has very low R,L,C and is professionally engineered for speaker use. Blue Jeans says it’s UL-rated for in-wall use. It also would be a good choice.