for the saving issue, my logic for saving the mum first is coz she is older so she cant hold it too long in the water. as for the wife, being younger shld be able to tahan for a while + also, being human, no matter how much u love a person, sadly to say it can be replaced if given time.
for the mum, u owe ur life to her....if nt for her, there is no u....aka, there is a bond by blood.
for the wife, if she love u enough and is understanding enough, she will noe and respect ur choice. coz if nt, she will also regret wif u de. somemore, jiang nan ting dian, if wife died liao, u can remarried...but u cant find urself another mother....
my views lah....