i think aod is faar better than light, it look cool and as in aod you can also check the message details, like by which app you get the notifications and regarding battery consumption notifications light also consuming battery but the difference is its not showing in battery uses details that's why you can't see the consumption further i would like to suggest just enjoy new and awesome features peoples are dying to get this feature don't think about 5-10% battery.
if AOD consumes more battery ..then it's fault of software or may software loop holes present over software.....AOD consumes approximately 3% battery for a day and that is phenomena for all kind of devices including my device also
