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.