I had a BDA-1 and BDA-2 and thought they were both excellent.
Well before the BDA-3 was released I upgraded my BDA-2 to a Berkeley Audio Alpha DAC Series 2. The Berkeley had more resolution but I actually found it a little too clean (or maybe too detailed/analytical) sounding and missed some aspects of the Bryston (a little thicker sounding with more timber).
I then swapped the Berkeley for a Simaudio 380D which I love. Not counting its ability to play DSD (which I've tried and sounds good) I found it a nice mix between the BDA-2 and Berkeley. Its super musical (by far the most musical DAC I've tried) with nice resolution and a little more meat on the music than with the Berkeley. I have no idea how it compares with the BDA-3, but it is certainly a nice choice if you find a used one. I've also never heard the Luxman DA-06 but based on reviews of each, I wonder if they wouldn't have a very similar sound.
Well before the BDA-3 was released I upgraded my BDA-2 to a Berkeley Audio Alpha DAC Series 2. The Berkeley had more resolution but I actually found it a little too clean (or maybe too detailed/analytical) sounding and missed some aspects of the Bryston (a little thicker sounding with more timber).
I then swapped the Berkeley for a Simaudio 380D which I love. Not counting its ability to play DSD (which I've tried and sounds good) I found it a nice mix between the BDA-2 and Berkeley. Its super musical (by far the most musical DAC I've tried) with nice resolution and a little more meat on the music than with the Berkeley. I have no idea how it compares with the BDA-3, but it is certainly a nice choice if you find a used one. I've also never heard the Luxman DA-06 but based on reviews of each, I wonder if they wouldn't have a very similar sound.