Speakers comparison between iphone 13 pro and pro max

Hello:
After like 20 month with my IPhone 12 mini, i decided to end this journey, and i do not want to advice any one to purchase this Phone if you are a heavy iphone user like me that depends on your Ios for most of your activities, battery battery battery, that is it.
so, am thinking of purchasing a new Weather Iphone 13 pro or pro max, but do not know what to choose,
all my issue is speakers and battery, because i have some hearing loss, and i need something very high, also, battery,
I know or even need your ideas about the size, many people after purchasing the IPhone 13 pro max did not like it's size at all, is it right?
so, just need your opinion about battery and speakers between them.
Any helpp will be highly appreciated.