Very new to Mac's and have a couple of questions. There is a $300 difference in the 20" imac price points. Just wondering if they are worth the money or if that money would be better spent on something else? I am also considering a macbook with a larger monitor to get the best of both worlds but not sure if no video card (macbook) will be noticeable or not. Any advice would be appreciated. This will be our first venture into the macworld so I am not sure what to expect!