Well, I find all those listed here are cool and all, but I don't really reach for them to listen, I have dozens of Miles boots and allt he official recordings, and I listen to those more often. . . . I've been listening to the original recordings since their initial lp releases and they really mean something to me. Love that music and the music has influenced me in many ways, in the ways art can, just as the books of Philip K. Dick, Henry Miller and Simenon have, etc.
Two of my friends have just released a cd on iTunes and cdbaby that takes the sounds of "Get Up With It" as a conceptual starting point, they're a guitar and trumpet duo named WD-41. They share digital effects and build soundscapes in a "He Loved Him Madly" sort of way. Their next rlease will probably incorporate another instrument. I like their work, you can hear the music at their myspace page:
http://www.myspace.com/wd41music