NiMH and a good charger, or sticking with multi-packs of alkalines.

To my environmental shame, I've given up on NiMH for my digital camera, as I
could never seem to keep a spare set charged. I just buy Alkalines from
Toys-R-Us, who do a seemingly perpetual 2 for 1 offer giving you 32AA for
5.99 and don't use the display unless I have to.

Christian.