The cables and power cords arguments go around and around. As I researched this, I saw the same arguments going back for years. The "try it and see" people get scorched by the "well, once you spend the money you have to believe it" people. The "everything matters" people get scorched by the "wire in your wall" people. I’m with the "try it and see" people, tempered by the idea that unless you have unlimited $$s, it's best to consider (a) what you want and (b) whether you might achieve that more effectively with other changes. And my sense of humor never falters because, at the end of the day, this is a recreational hobby with discretionary income.
