I just ordered a lens from B&H and got the free Luminesque filters. I haven't been able to find much out about them. I called B&H and asked what kind of quality they are, and the rep told me that they're comparable to Hoya. The company that makes the glass for them is Schott, which I believe is pretty high end glass. That's what B+W uses. So does Heliopan. But I'm not sure if these filters are on their higher end, or something more middle of the road.
Sorry this isn't too much help!