As far as I know, the best quality footage of the extended version of Halloween is indeed the Anchor Bay release. It's unfortunately riddled with scratches and whatnot, but at least there is a BD source for the film proper now.

The YouTube footage is on par with the quality of what I have. It looks a little "better" than mine because the viewing size is smaller of course, but the AR and everything is essentially the same. I still think though, in the end, my footage would be higher quality for the project, simply because of the source compared to it being off the net.