I would go with the I pod touch because you already have a Ds lite and other Gameboy systems. Well it is sort of like me I wanted the Ipod touch and the DSI, but I read more about the DSI and it didn't sound to good because it couldn't play pokemon GBA games and the only good thing about it was that it had a camera which you have. Do you have an I pod? If you don't I would get the I pod touch. My decision between the Ipod and the DSI was the I pod Touch because I wasn't willing to give up GBA games.