I'm wondering what your experiences using the MacBook Pro 17" was... I had a MacBook 13". Somehow I didn't have too much of a problem with it (explanation below), but the screen is a bit too small. So I upgraded to a MacBook Pro 15". Nice screen... but the back pains came. I'm not sure why it didn't come with the 13" -- but came it did. So I gave up on laptops and got a iMac 20". Problem-free ever since. However, I'm returning to school soon, and will need to move my stuff around a lot (relative to now, that is). I'm contemplating what I should do. And that's where you come in. In your experiences with a 17"er, is it better for your back? Worse (It did get worse when I went from 13" to 15"...)? I will be at my computer a LOT -- being a CS major and all -- so I need it to be comfortable. I will stick with a desktop and deal with the moving part if necessary, but it would be nice if I could go portable WITH the comfort.