To be honest, I wish my camera had a proprietary lithum power source. I think this whole thing about being able to use AA batteries is overated.After hearing so much advices from so many people... I hope you have not loose your confidence level in using re-chargeable cells. The consumer re-chargeable cells are actually quite raggered in a sense that...
1. if you drain the cells completely.. only if you leave them idle for about say 2 ~ 3month, the cells will start to degrade... else, once you recharge them, they should return to normal again.
2. If you once a while overcharge the cells, nothing drastic will happen also.
I'm going to try eneloops though!