All I know is that my phone's battery DOES last longer with a task killer.
Seeing as I don't run any tasks except for when I want them and not when the apps makers want them to run, it helps being able to kill them on my own accord.
There are certain apps I don't want to run at all but the manufactures put bloatware on the phone against our wishes and we need to quash them such as facebook and weather apps I never use.



