I don't have an MQA DAC, but then again many people impressed with it don't either. I think my biggest problem with it right now is music. There isn't very much of what I listen to available in MQA, and what there is I already have in hi-res PCM. It's easier for me to find my traditional PCM version and play it than MQA, and although MQA sounds a little different, and usually pleasant, it doesn't necessarily sound "better", and certainly not enough to justify the inconvenience.
If Warner's ends up being the only major label to adopt MQA (and at this moment it sounds as if that may be the case, as Sony and Universal appear to be pursuing other avenues), I think MQA will die. Still, at this point in time it would be nice if my next DAC could be MQA compatible, althouh again, that seems unlikely right now.