Hello My daughter would like a Nintendo handheld console. We already have a Wii-U which I managed to setup to play games off an external hard drive. However I know nothing about these DS handhelds. She would like either the "New Nintendo" 3DS XL Or the "New Nintendo" 2DS XL. These new consoles have the coloured buttons on them right? I'm not even sure how to tell the different generations apart. Is the 3D worth it are there many 3D games? Personally I'd probably just buy the 2D version. Also what Nintendo OS firmware version should I be looking for? So we can play "backed" up game titles. I can buy new, if I know that I am buying the correct one? that will likely have a lower firmware version on it. Or I can buy pre-owned, perhaps from some of the local games shops and actually ask to see it running and check out the firmware version that way. If the wizz kids could give an old Dad some advice I'd appreciate it. Thanks.