I currently have a 120gb iPod Classic which I love. I do not want to get rid of it because I have a huge music library and I need the space. Also, for some reason I am obsessed with the original iPhone concept (the scrollwheel). I purchased a black 16gb iphone from Apple online. I don't plan on using the iphone as a MP3 player because I favor buttons, and the ability to skip a song without pulling the device out. So the plan is to continue to use my classic as an mp3 player, and to use my iPhone as a smartphone. I know that people have mentioned the incredible amount of space that an app can use. But obviously I'm not going to download 3 different map apps such as Tom Tom, which may demand more than 1 gig of space. Do you guys really think that I would use up 16gb in 12-18 months? Some people have mentioned video demanding a massive amount of space. But it's not like we'll be recording in HD. Video files from phones are typically insignificant. Do you think I should have gone with the 32gb iPhone? Would the apple store allow an exchange if I changed my mind later (before I actually open the box, if I can maintain self-control)?