A good friend of mine (and A'goner) did a dac comparo some time ago. A Mytec Brooklyn Bridge, a Chord Cutest and a Bryston BDA-3. The differences were easily discernable particularly on strings and cymbals. The Bryston came out on top as sounding very natural.
Same friend told me about a Wiim dac that was on sale on Amazon $175 because I I was looking for a dac for my garage system. He calls me the next day and says "Don't even open the box, this thing is a piece of $&%*@!" So, its on the way back unopened.
Yes, dacs sound different. I would imagine that once you get to >$10,000 range the differences may come down to preference and not to explicit "better or worse".
Regards,
barts