Most of the batteries that we use for our gadgets are the AA size. Although we like Energizer, they can sometimes be a bit pricey.
Since we are on a limited budget, we use the Eveready Super heavy duty battery (black color, as opposed to the blue and red). Eveready comes in three colors, black, blue, and red, but it is the black one that lasts longer. Okay, it does not perform like the Energizer, but since it costs less than half of that of the Energizer, it is still worth it because performance wise, I think it is safe to say that it works half as much as Energizer. So at least, I get to save some money and I don't have to shell out a big amount on a single purchase just for a battery.
In most stores, Eveready may be bought per piece, although it also comes in packs of 4. There is no price difference between buying just one piece or one pack. This is what I like about Eveready. With Energizer, I have to buy a pack of 4, and since it lasts long, it just stays there in one corner. Sometimes I would lose it because I would forget where I put it.
I think Eveready super heavy duty battery is a value for money battery.