I personally do like the superbit series, because if nothing else, it has DTS sound on them. I think there may be a slight improvement in picture quality, but not much.
But they don't have that many out, and definately not Star Wars. Its from Russia and I've seen the Indiana Jones trilogy on superbit out of there, also of very questionable authenticity.
But it says its real on the auction, so it has to be. lol