There are definitely some that work better than others, but I generally aim for free. And with the plethora of apps available, it's not difficult to switch from one to the next. The exception - movie editing. So far, the only true movie editor I have found for relatively "free" is Movie Maker. And while I like it, you are limited on the basic features. There are many that will make slideshows and animations, but few that will edit video for free.
That said, I've compiled some of my favorite applications available on the Chromebook - for free - for creation. Check out Chromium Creativity for creativity in Chrome and explore fennovation.org for all other things Chrome.