What is the best audio format?

Hello everyone!
I’m new to Envato but not to all markets!
I have uploaded a template and i got soft rejection for audio quality!
I convert my video previews for less size,using Hand Brake and never have problems with other markets,but i got rejected for this twice!,and they said third time if not solved,gets hard rejected!
I check my preview video with Media Info application,and it shows that the audio is 159Kb/s,but the reviewer says it is 92Kb/s!
What is going on?!..Even my preview video sounds exactly the same as the music on AudioJungle!,and the reviewer says it sounds very bad!!
Can someone please help me?
Thanks in advance