In a video at Studio Daily, ToonIt vs. After Effects CS4 Cartoon, Red Giant’s Sean Safreed creates a custom cartoon look and briefly compares Red Giant ToonIt’s feature set to the bundled Cartoon filter inside AE CS4. Hopefully there will be more of this type of presentation that compares unique features of 3rd party products with free built-in capabilities, and maybe with a champion for native AE approaches who pushes limits in set-ups or preprocessing.
And how about a Particle World vs. Particular match? It wouldn't be a contest as much as a light on why Particular has become the favorite AE filter.