These green duracell rechargeables are the absolute best. They have a higher capacity than most other rechargable nimh batteries. Only issue is that they are very slightly larger than a standard AA battery (probably has something to do with the higher capacity) so they're a tight fit in some devices. Like in my mouse I have to pry them out with a pen because it's too tight to do it with my fingernail.

2nd choice would be the black eneloop pro batteries.