Just one question: You tested the Bushmaster against the RegaDAC - but I did not see which settings you used.

Upsampling? Filters?

I've heard the RegaDAC - one thing that really hurts my eyes is that they use no external PSU. In my opinion the Bushmaster is at the same level of details. - whereas the flavour of the sound is a bit different in my opinion.

To the people with "dropouts" - have you tried turning of your WiFi connection? (On most motherboards the soundcard is using the same "lane" as the WiFi.)