I am looking for a Mac. I don't necesarily need a portable, but would like it. Right now I'm considering for one of my options is the iMac 17" 2.0 GHz, 512RAM, 160GB, SuperDrive. The portability isn't a MUST HAVE. But would be "wicked" awesome. Is there a noticeable difference between the 17" and the 20"? I am a student, and don't have much money. The MAX I am willing to spend is $1700. The portable I would want is listed in my sig. I am going to be doing very minor video editing, not that much photo work (most using iPhoto, not much of Photoshop), iTunes, iChat(or something similar), Microsoft Office for Mac, and some other non intensive work. I would love being able to be outside on the porch surfing the net, going to my Mother's house to my Dad's house with my computer(parent's divorced ), and just moving where ever I want to around the house with a PowerBook. But I would also love the unique style and power of the iMac G5. (I know the PowerBook has power too, but... the iMac has a G5 and a 2.0GHz proccesor.) PowerBook or iMac?