I found some 2500 mAh AA Energizers in a 12 pack at Home Depot. I forget what I paid now, but after looking in several places, those were by far the best price.
I found some really low priced 'Digital' brand at Big Lots a couple years ago and they were good performers. I think they were about $1.50 each. Worked fine but only for a couple years, then went downhill fast.
I bought some MaHa PowerEx from Thomas Distributing once, but their prices have gone way up AND there's the shipping charges on top of that.
For the second year in-a-row, I bought a package of 12 NiMH AA batteries at the Dayton Hamvention from a dealer in the flea market. The dozen only cost $20 and are rated at 2900 mah. The dozen I bought a year ago have been in daily use in my scanners and digital cameras (I do photography for a living).
The brand name is: Power2000 "Professional" (made in China) They are black, orange and yellow in color
I have seen them offered on the internet at a slightly higher price. Unfortunately, I did not get the dealer's name that had them in Dayton....BUT I can vouch for their superiority to everything else I have found.
By the way, they last for about 20 hours in my Pro-97 on a single charge and will last all day in a heavily used digital camera.
enloops by Sanyo.
Take and hold a charge better than anything I have tried.
If you have a Costco near you they have package that includes a holder(like a little briefcase), charger, 8 AA's, 4 AAA's and adapters for charging C's and D's.
Costs around $24.
You may find it at www.costco.com if you are not near one.