PS Audio DirectStream DAC or Aqua Formula xHD

If you buy an Aqua and dislike it, you're stuck with the sound because it's never gonna' change. 

On the other hand, a DirectStream changes based on the firmware you choose to install. Also, the manufacturer, PS Audio, is committed to evolving the product via continuous firmware improvement. I love my DirectStream DAC.
 

Late to the game but there is no comparison, I've heard both and own the Aqua Formula xHD. The PSA doesn't heave remotely the same level of resolution as the Aqua, nor the sense of ease and naturalness - it's simply better on all fronts.  They're not even in the same ballpark, a better compare would be the Aqua La Scala vs. the PSA. Also, I've heard the TotalDac 12 and Aries Cerat Cassandra (I think) and believe me they are far from dull or lifeless. Curious what you ended up buying?

@sbonamo thanks for your input, i still was not able to build my rig yet but after auditioning a lot of gear in the past few years my choice is Totaldac and most likely the D1-Direct which is the best one box solution from Totaldac.Will also get the D1-streamer.