For bidirectional audio, 64kbit/s is not good enough. On sound quality, the current bluetooth headsets are 2-3x priced over the same brand's top wired headphon

For bidirectional audio, 64kbit/s is not good enough. On sound quality, the current bluetooth headsets are 2-3x priced over the same brand's top wired headphones, for fraction of the quality. Not just because the aptX HD is not “good enough”, but because the poor DACs. Good enough DACs are power-hungry bugs, it is unlikely to see them built into wireless headsets in 2-3 years time.