This was one of the first demos that I saw on the Amiga. I immedietely liked it and watched it over and over again.
There are more parts in the demo, thus megademo, and I kinda liked them all, if you don't take the credits as a part of the demo. What I found very impressive at the time, was indeed the vectors part, as it is very entertaining and well done. The circle twist is also a nice routine, which I saw several times in other demos AFTER this one.
The music by Romeo Knight is simply awesome, my favorite track here would also be the one which is played during the vectors part, a track called Wasteland. This part of the demo is also downloadable as single demo.
And if you're an Iron Maiden fan, or just like their coverart, the loading screen should also be something special ;-)
All in all a great demo, surely not the best, but in my opinion one of them. A must see, but as I think this one is very popular, everbody out there should know it.