I don't have really expensive DAC's, but what I do have are:
Bryston BDA2 Dedicated DAC
Internal DAC on my McIntosh C47 preamp
Internal DAC on my HEGEL H160 integrated
Topping D30 Pro Dedicated DAC
Internal DAC on my Bluesound player
When I have swapped my DAC's around, I really can't hear differences...The big differences for me are with speakers. Even the non-golden-ear listener that I am can hear big differences from transducers! I can only guess if I did a perfectly setup double-blind experiment with DAC's, I might be able to hear differences, but they would be ever so slight.