ATK Free has without a doubt made a difference in awake time. I went from 75%-100% down to under 10% but my battery life is still miserable. I think I have a bum battery and VZW is sending me another one free. My question is to ones using ATK...Why does it send my phone to the HTC boot screen at times? It doesn't always do it. Weird!Advanced Task Killer either pay or free. I always prefer free, but it depends on the additional options that are available if you buy the other and if you are going to use them.