I love my new G5, but I would kind of like to go portable. Do you think there is a huge difference performance wise between the G5 1.8 v the 1.25 15" PB? I will be doing movie editing around once a week. So I would like something that is fairly quick, and as I mentioned, portable would be nice. But, if the decrease in perfomance is that dramatic, I will just save my money for a little while and then buy a powerbook later. Any advice?