er he is asking about the outlier one i think which is a bluetooth earpiece...not a headphone.
his main requirement for the bt headset is to be able to handle phone calls without disconnecting, being soft or muffled which is why i recommend him to get those bt headset which is geared more for phone calls rather than music. headset like plantronics or sony have noise cancellation.
this outlier is good for music but not great at handling calls. even with the clearspeech technology, it is still lacking when comes to phone calls. when you are at noisy environments or with strong wind, the voice will be muffled and not clear with all the background noises.
if he want the bt headset to have good sound quality for music as well as good in handling phone calls then have to get those sony ones.
for music this headset is good for the price you are paying. also good for watching youtube videos etc. quite comfortable and won't fall out for those using it for sports purposes.