All three sound great, all three are very musical, all three sound very different.Interesting comment, reminds me of a review some years ago comparing 3 CD players, describing one as like Madonna, one as like Diana Krall, and the last one like Julie London.
Having owned a Sony XA9000ES, and after doing some reading about the other two, I'd also choose the 840C, but that's just because of the way it's sound is described in reviews.