I can agree with Birgir when he said a few posts ago that the 009 sounds as though it had a cutoff. To me it lacks the body and soul the 007 bass has, or the LCD-2's for that matter. OTOH the 009 is even faster, more resolving, airier and three dimensional than the 007. I love both, I don't regret having purchased the 009, nor will ever get rid of the 007. But to each one his own, I can understand why some people would think the 007 can be held as more "complete", and others would think of the 009 as "superior".
If I were pressed to own just one, I haven't made my mind up yet. If I could keep the LCD-2, then I'd keep the 009, if not, it's very likely I'd end up with just the 007, but not completely sure yet. Fortunately I don't have to make such decisions