Even though I loved the SYW version from the moment I heard it the first time, I still thought that the demo was a little better. Just because how wild, angry and reckless she sang it.
But one day I decided to listened both the SYW version and the demo of this song that I have back to back. What I found out is that I hate the way she sang on the demo

for that very same reason I used like it then.
Comparing the demo and the SYW version, even though SN can't hit the high notes anymore, she does a hell of job in it.
I know everyone fell in love with the demo because it IS a great song but even if she had made an album version of it back then it would never be like the demo, IMO.
Isabel
PS: If you haven't listened the SYW version and the demo back to back, I recomend that you guys do so. IMO, you can see why LB had said that Stevie is singing better than before.