I've been using Apple's Pages and Keynote for a few modest projects.
They're functional span is very good and the price is excellent.
Quality though, that's a problem. Once you move outside of the basic functionality there are big unfixed bugs and half built solutions.
I'm somewhat used to this from Apple. Their software quality is only as good as it has to be -- and their customers are notoriously compliant. (Though years of poor quality Aperture releases probably cost Apple the professional photography market.)
I'm used to Apple's poor quality software, but I don't like it.
We're into the Apple 4.0 era now. There are reasons to expect Apple's elegance and share price to decline. i'm good with that. I'd trade 20% of Apple's elegance for better quality products.