I'm all set to order a new powerbook, but can't decide between the 15" or the 17". I plan on upgrading the hard drive to the 100gig 7200rpm and adding 2gb of memory from crucial when I get it. I plan on using it for all the basic stuff, web browsing, music, word processing, but also plan on using it to encode video, and will play World Of Warcraft on it as well. This is going to be my only computer so I will use it all the time. I'm getting a laptop and not a desktop because I'll be going away to college next year and don't want to have to lug around a desktop. I guess I'm wondering if the 17" would be better for heat reasons. I will be putting it through its paces fairly often, and want to make sure it wont crap out on me. I've heard that the 15" gets really hot. I want to make sure I have a reliable notebook that can do what I want without me having to worry about it overheating and breaking down during a long encoding session, or in the middle of a game. Anyway, any help would be greatly appreciated along with any info you could add. Thanks