hmm will have to check out both of those. I stopped using removable rechargeables a while ago in my LED bike lighting.

the first time I lost a $15 set of rechargeable's was the last time I used a set :-) hehe I usually get a year out of a set of batteries. for the headlamp I use a rechargeable but its an external PACK attached to the bike. one day I will rewire and run everything off the pack at least on my bike.