Both have a stron following from the comic book crowd, and both are writers who write themselves into their screenplays. Favreau has more mainstream success, but Smith has been able to build a fanbase and create a universe for his characters.

Have to go with Smith, personally.

The only Kevin Smith film capable of topping Favreau is Chasing Amy. Between Swingers (which I know he didn't direct) and the Iron Man films, Favreau takes it.

Clerks was the first time that geeks were encouraged to crack open the closet door, and I like the simplicity of the story it tells. But Swingers name-dropped Deep Space Nine in addition to being an enjoyable slice-of-life story of its own. Favreau gets the nod.

Chasing Amy and the first 30 minutes of Clerks tops Iron Man

As time goes on, I like Clerks less and less and Clerks 2 more and more. Clerks: The Animated Series is still the best thing Smith has been involved in.

I agree on the Animated Series being very good, but Chasing Amy is an all-time great film imo.

And I like Clerks enough to give Clerks 2 another chance someday, but I can't imagine ever liking that steaming pile of utter crap.

Smith. Probably my favorite director just in terms of fun films.

Chaka Luther King

I still like Big Macs.

smith

Kevin Smith... but I'm mostly picking him for his writing, or at least I think I am.

After Cop Out I just don't know anymore.

EDIT to add: I love Smith's films, but just not his last one... at all.

I've lost track of the things I agree with you on.

This is spot and I couldn't agree more.
(although, I could do without the dance scene in Clerks 2)