I really like this demo. The exaggerated echo on it and the grittier vocal tonality really make the song more visceral than on the finished Core album. Also, if you listen closely there seems to be more going on with the drums - more cymbals or something.
Also, and I know I've pimped the Core DVD audio here for years, but it makes for a really unique back-to-back listening experience to go from the demo to the Wicked Garden track on the DVD.
It's a great demo, and it makes for a great go-to track when you've listened the hell out of Core for twenty years.