Is there any consensus opinion on flat "invisible" speaker wire that goes on a wall? I just saw a the AR brand of it in a local store and it seems like a great solution for my wall-attached rear JBL N-24 speakers. However, I do not want to sacrifice much sound quality. Will that be the case and should I stick with regular 12 gauge cable instead? Or are there any other good alternatives for wall placement? Thanks for any opinions/advice.