Duralites
Now this is just my opinion, but it's the way I feel. I had 5 Duralites bite the dust in a years time and at $34.95 ea. that can get expensive. I can buy 2 1650 mah nimh (Sanyo) for the same price. They have no memory problems, you don't have to cycle them, they are lighter than ni-cads and you can get the same effect as using duralites with something like a Sirius charger so that might just be the solution to good battery management.....or at least I think i'm on the right track anyway.
I certainly have nothing against ni-cads because they served me well for years. I just think nimh is better from all the research and testing that I have done, plus the fact that you can charge them up and they seem to hold that charge for a long time when not in use......just my opinion (i'm probably wrong)
Dave