litium ones are much better. At first I avoided them because they are so much more expensive but I got fed-up of normal AA batteries not lasting long enough in my camera. It got to the point where AA batteries would only last a minimum of a week
So I gave in and bought some lithium ones for my trip to Finland. They were well worth the buy - lasted the whole trip plus an extra month at home. I wouldnt go back to normal AA ones
Maria