Problem getting bluetooth apt-x codec to work

Hi fellow mac users,
I recently bought a creative wp-300 bluetooth headphones (comes with Apt-X support) and tried pairing with my macbook pro retina. The process of pairing the device was quite straight-forward and it was completed without much hassle.
However everytime I performed an option-click on the bluetooth icon, it shows that my active codec for bluetooth audio is SCO instead of Apt-X. There was only one instance after I messed about with connecting and disconnecting the device, I managed to get it worked with Apt-X codec. Sadly, I could not reproduce the same results after trying for the past few days.
I have done some research in the forums and I am sure it is not a bluetooth bandwidth conservation issue as I do not use any other bluetooth device except for this headset. Also, in most of the other cases, people seems to be getting their bluetooth headsets to work with SBC codec rather than SCO. May I ask in terms of sound quality and signal consistency (i.e. frequency of losing beats), how does the SCO codec fare against SBC and Apt-X?
More importantly, is there any way that I can always get my creative headset to pair and work with Apt-X codec? It is just kind of disappointing that I cannot make use of this technology when it is clearly supported by both devices (mac and headset).
Regards,
D

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