I'm considering getting a new iPod. I have a 20 GB, non color iPod right now. I was considering a Nano, but I want more space so I can use the iPod to back up my home folder as well. But I'm afraid new, sleeker and slimmer iPods are just around the corner. I don't need somthing as tiny as the Nano since I tend to only use it in the car but I wouldn't mind a 60 GB iPod that was the size of a mini. So, buy or wait?