I agree with Ken, it's a matter of personal experience and preferences rather than anyone being able to justify their choice as "best". I have had good experiences with buying my rechargeable stuff from Thomas Distributing
http://www.thomasdistributing.com/
I have the 2500mAh MAHA Powerex AA batteries and after more than 5 years of off-and-on use they are still holding their charge and performing well, in my jetBook Lite and other devices. There are now 2700mAh and even 2900 mAh batteries now, that may last even longer than alkalines depending on the device and how it drains the current.