"So how do you feel they are just ok?"
I don’t believe that devilboy was questioning Burson’s engineering competency but was referring to the sound quality which is what obviously matters most. As most of us recognize sound quality is a subjective and individual call/choice. Citing the parts list can be impressive (Chips, receivers etc.) but doesn't ensure excellent sound quality.
I don’t believe that the DAC chip utilize is the dominant factor of determining sound quality. The quality and execution of the analog circuit and power supply of the DAC has more impact on the ultimate audio performance and how good it will sound.
This is my opinion based on many listening comparisons over a number of years. Two DACs could use identical chips and yet sound quite different. Numerous variables are at play.
Charles