I was thinking of getting a DS for a few games (and probably more later), but since there were so many different types, I don't know which would be best? Is there a real difference between them all? I don't really care for wifi or it having a camera. I would prefer one with a screen that lights up (not sure if they all do that, or if none do it)... getting really tired of having to turn on a light to play my GBA. One that plays older (GB, GBA) games would be great too. But, like I said, I don't really know much about them or which would be best for me to get...