Re: >reasonable (by Apple standards)
"Lower brightness on screen, advanced wifi - switch off when phone sleeping (altho I have unlimited 3g internet allowance), push apps only every four hours or so (facebook, email, twitter etc), check battery to see worst offending apps - delete 'em if poss, do you need gps on all the time, bluetooth, NFC? disable when/if not required (Android will still poll rough location from transmitters)."
I don't know why people accept phones that require this level of maintenance to get acceptable battery life.
Just get an iPhone.