I am surprised that no one has mentioned the MF V-DAC - I guess it does not re-clock the signal. It gets very high scores on comparison tests with other DACs that are much more expensive.
Per the Empirical Audio website, once jitter is removed or greatly eliminated, the playing field is leveled for DACs, so maybe my path is MF V-DAC and Airport Express for now, then purhcase a re-clocker later (like the Pace Car). I would like to run PC Audio wirelessly using digital coax, does anyone know how? Nugent thinks optical ICs are more jitter-prone than digital coax.