Just wanted to update and say the Eneloops have typically been the leaders but recent test have shown the Powerex/Imedion are matching the Eneloop performance and they are a little cheaper so it's no longer the case that Eneloop are the only choice. I think you can't go wrong with either. I tend to wait until Eneloops are on special, you can pick them up for under $20 for 8 if you wait around.