Warning: a thread with positivity. Click away now if you are easily offended.
Bought a Playmaker MK1 over the weekend, as I wanted a device which supports FLAC. Wasn't expecting much of a difference between my old Airport Express and the Playmaker (connected to BL3s), but there's a huge noticeable difference in audio quality.
Sounds are more obvious, separated effectively. Some of the tracks I play frequently sound instantly better via the Playmaker - the DAC clearly makes a difference.
Not had a single dropout streaming audio to the Playmaker, either via iTunes or Airfoil.
Conclusion? Get yourself out now and buy yourself a MK1 Playmaker whilst it still supports FLAC. It's really worth the investment.