The problem with flashing a non-TelCo firmware is that you will lose most of the NZ-based NFC functionality, unless you put a non-TouchWiz based rom onto it (CyanogenMod etc) then they'll all still have essentially the same UI.
Have confirmed that the act of charging it seems to result in the excessive drain, guess I'll just have to wait until the TelCos release the update with the fix, given the usual timeframe that's at least another 2 months away.


