Hello, I'm looking to join the Wii family but I'm on a bit of a budget so I'll likely be buying a second hand one for $150 AU. This will be a white one of a couple of years old. I just want to check if there is any difference in the hardware in the old white Wiis vs the new red and black Wiis? I know that Wii motion plus comes in the black Wii (addon) and the red Wii (built into the controller) but I could just buy that in addition anyway. I know there haven't been drastic improvements like HD graphics or anything but has a single thing changed in the hardware that is noticeable?