New York Times Article on Battery Life; Includes Photos of the NXT

An article in today's New York Times addresses battery usage in toys and other electronic devices. It also features photos of the NXT. It states that:

1) The primary drain on batteries is external heat (naturally).
2) Rechargeable batteries suffer significant power leakage, whether being used or not.
3) Alkaline batteries have less power leakage and last longer.

The article goes into detail about all types of battery usage and is well worth the read. Find it here.

NXT Battery Use Comparison

Here are test results comparing the life and power of two different battery types: the NXT rechargeable vs. conventional AA batteries.
(Your mileage may vary, as they say).

Which type do you use and why? Has anyone compared the life and power of AA rechargeables with non-rechargeable AAs?