Alright, here's the deal:
I decided to start on a little project (by started I mean I have a motor and sprocket and decided to use them). I've decided to use everyday AA NiMH cells.
Yes, I'm aware that they are a little small and therefore not generally well suited for this type of application. But, they are cheap and, more importantly, thin. I'll let you guess why that's important until it's done ;). Actually, I would have gone with AAA if it wouldn't be hell to wire them up (not to mention they would cost way more per watt hour).
The problem is this: I'm having serious problems choosing a brand. There's like a google (excuse the pun) of them! I have no idea which ones are of sufficient quality. The only ones I've ever used personally are Duracell and Energizer. I can't really attest to the quality of those since I've never tested them in a particularly scientific manner. All I've used them for is my MP3 player (AAA) and my Wii and Gamecube remotes (AA). Those are very low drain anyway.
The cheapest I can seem to find are from All-Battery. They say they're 2600 mAh but I know they're really about 1500 mAh. I've also heard Ansmann batteries are supposed to be good, but they're more expensive.
I'm hunting for pretty much anything in the 2000 to 2700 mAh range.
Oh, also I'm gonna need, like, 200 of them :).