Composite Managers as they relates to CPU usage and batteries

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http://crunchbanglinux.org – Hey all,So, I turned on the composite managers to get a bit more sexy out of my conky... and I'm liking it!But part of the reason I went with Crunchbang in the first place was that I was looking for something lightweight, particularly so that I could eke out as much battery life as possible in my creative-writing netbook.It seems like the average CPU usage is 6-7% with composite managers running, and 4-6% without... anyone have enough experience with these to know if I should be sacrificing the sexy for those few extra percentage points? (HowTos)