Keynote vs PowerPoint
Perhaps someone can educate me, but I think I still prefer PowerPoint because of its text-based outline tool. Let me explain.
Unless you're making sales presentations, the resolution and transition effects (affects?, I allways get those confused, blonde roots) are not as important as the content. In fact, a presentation that looks too slick only undermines the credibility of its content, at least in the corporate world.
With this in mind, an outline feature that is visually-based is not as useful as a text-based one. That is because I use the outline feature to organize my thoughts and create the basis of the presentation. I can't read the text on small iconic representations of screens.
It is a great tool once the underlying message is organized, but it focuses too much on the graphic and not on the message for me. Just my opinion, don't beat me up for being honest. As I state in my title, I'm happy to be educated and learn how to use a text-based outline tool within Keynote.
There is one thing I can do in Keynote that I can't in PowerPoint and that is create a series of slides to be used on my PSP. Keynote allows you to customize the output resolution. PowerPoint does as well, but only with preset aspect ratios, non of which are PSP suitable.
Just my two cents.
~iGuy