Thanks. I gave my CD3000 to a friend. It's a very good headphone, but the R10 is better on every parameter I can think of. However the Z7, probably due to my own stupidity, look interesting, perhaps for those occasions one is away home and needs not to disturb the people around.
Sound wise I slightly prefer the black walnut one too. Not sure about which one I like better aesthetically. Probably the Myrtle, but I'm rather sure that if seen live I might think otherwise.
Larry, I have no scientific evidence of any of those really working on the long haul, however hypnosis might help to get you going by better controlling your pain. You're a lucky man, you're alive, your daughter is too, and you should be able to enjoy life completely.