I concur with Dgad on the sound effect of the floor. The phase effect or shift is a sensitive factor in my set up. I don't declare that its the most revealing (resolution) but music flow and soundstage is paramount.
Foils seem to offer a nice presentation at a bargain price. When people like Dave Magnan making foil speaker cables, I take note. He has been designing cables for as far as I can remember (15 years).