I had very light swirl marks, nothing very deep and the VSS is a pretty gentle product as far as abrasives go. You would need something more aggressive for deeper scratches. VSS puts a higher polish on, so I am able to coat without having to do a final polish.
I had good luck with other products too, the big thing is putting in the time behind the polisher.
Have you tried one of the clay mitts or fabrics? I got tired of fumbling around and dropping the actual clay products and moved to a mitt and they work as good and are much easier to use.