I used rechargable alkalines in my digital camera for a while. It was a disaster. Because of the high power the camera needs, I could only get 20-30 pics off a set. I switched to NiMh and they do *much* better. I also use NiMh in my SporTrak gps and have been quite pleased with them and would highly recommend that option. The only downside to them from my perspective is that NiMhs loose some of their charge over time when not in use. So get a charger that keeps a trickle charge going, and take them straight from the charger to use. I should also reinforce that I have found my NiMhs capable of lasting through *many* more charging cycles in the long run. So even though they are more expensive up front, my experience is that they pay for themselves quickly.