1-warranty on sony earphone is questionable
2-the earphone sounds muddier than a dynamic driver so whats the ba driver doing there?
3-i have got sony mh 1c and they kick h1 in arse
4-me a151 cost only 30 dollars so no comparison can be done
5-time will tell but let me tell u this,these buds are gonna die an early dfth as they are lacking in all departments as if the ba is not even working