I'd like to buy a Mac Pro. I'm and interactive designer I can afford it with either a 3ghz processor or 4 gb of ram. For the most part i'm using a lot of flash, photoshop, illustrator, and after effects, but i've been trying to get into more video and 3D based programs. it seems like that the 2.66 and more memory would fit my needs, but i'm wondering if it's worth going to the 3ghz and upgrading the memory later on as i need it. sorry if the question has been asked already, but pointing me to simlar thread would be helpful. thanks...