I'm one of those who buy the cheapest batteries I can find. I've found that Ray-O-Vac AAA Alkaline Battery is generally priced in the low end of the battery display and tend to last a considerable time longer than "store brand" batteries do. AAA sized are the batteries I use most and please be advised that my statements are based only on the AAA Ray-O-Vac that I'm familiar with.
You get even more extra savings the Amazon.com "Bottom of the Page" deal on this item. All around bargain!
John Row
colobbfan