I prefer the original too. This one makes it sound like the instrumental doesn't change or progress that much throughout the song. The opening has a lot less of a kick, too, and the opening is one of my favorite bits.
Because when you play the album version of Radio it has that static sound in it...which is usually an after effect not included in the demo. WHY IS IT IN THE BACKGROUND OF THE DEMO? idk this one seems fishy to me